Collection Care blog

My name is Ana, and I am delighted to introduce myself as the conservation intern at the British Library Centre for Conservation (BLCC). I began this enriching journey in March 2024, and since then, I have been gaining invaluable experience in the field I am deeply passionate about: book conservation. 

Allow me to provide a brief overview of my professional background. In 2020, amidst the onset of the COVID-19 pandemic, I completed my BA in Conservation of Cultural Heritage at Complutense University of Madrid, Spain. During my studies, I developed a strong interest in book conservation, which I further specialized in through a Graduate Diploma and an MA in Conservation Studies of Books and Library Materials at West Dean College in the UK. 

Upon completing my academic training, I was thrilled to embark on this professional chapter at the British Library. This Funded Conservation Internship has been a remarkable opportunity to work alongside leading experts in the field, enabling me to establish my career within such a prestigious institution. 

A distinctive feature of my internship was its rotational structure. Approximately every six weeks, I transitioned between various teams, which allowed me to collaborate with different professionals, learn from their diverse expertise, and gain a comprehensive understanding of the operations within the BLCC’s departments, which significantly enhanced my professional development in book conservation (see Fig. 1).

Fig. 1: Ana working on an illuminated Persian Manuscript as part of her internship at the British Library

I have had the opportunity to work on a diverse range of projects, including the conservation of three small children's leather books, a 15th-century Persian manuscript (see Fig. 2), a 19th-century Daoist Rituals manuscript, and six notebooks belonging to G.K. Chesterton.

My work has also involved the preservation of Arakanese Buddhist manuscripts from the Murray Collection for digitisation, as well as volumes from the Adam Matthew Digitisation Project.

Additionally, I rebounded a volume from the Cotton Collection containing fire-damaged pages from the Ashburnham House fire of 29 October 1731.

I have also collaborated with colleagues from the Preventive Department on the preparation of the Medieval Women exhibition and assisted in the conservation and preparation of various items for a touring exhibition. 

Fig. 2: Ana testing pigment solubility on an illumination from a Persian manuscript

Working on such diverse items and alongside experienced professionals has allowed me to deepen my knowledge of various materials and different conservation techniques through hands-on experience. This has refined my decision-making skills, enabling me to approach new projects with greater confidence, adaptability, and a more strategic perspective, while also fostering greater independence in my work. 

As my internship comes to an end, I feel more confident in my conservation skills and look forward to applying this newly acquired knowledge to future projects and experiences at the British Library as a book conservator and a contributing member of the team. I extend my heartfelt gratitude to the British Library and my line manager, Zoë Miller, for this incredible opportunity, and to Dr Lars Atkin, whose generous support made this dream possible. 

I will forever be grateful for the experiences and knowledge gained during this internship, and I look forward to carrying these lessons with me throughout my conservation career.

In the British Library / Qatar Foundation Project, the Conservation team works closely with the Imaging team. In Phase 4 of the program, new challenges emerged, such as the presence of oversized, attached foldouts in books. These foldouts present unique challenges not only for the Conservation team in terms of handling and treatment but also for the Imaging team when handling and digitising. As the number of foldouts increases within the collection, the Conservation and Imaging teams have worked together to reassess the risk of damage during the digitisation process and handling. 

In a skills-sharing workshop held this March between the Conservation and Imaging teams, one key issue discussed was the difficulty of practically supporting oversized, attached foldouts during digitisation in a standardised, quick, and stable manner. This workshop offered an opportunity to brainstorm solutions and initiate a collaborative effort to create a tool to address this problem by combining the expertise of both fields. Past collaborations between Conservation and Imaging within this project have already yielded innovative tools, such as the widely used book cradle support designed and built by Flavio Marzo.

Fig. 1 Example of an attached foldout

Previously, imaging technicians used an ad hoc technique for supporting oversized, attached foldouts during digitisation. This involved cutting smaller foam pieces, assembling them into a larger structure, and placing photography paper on top to create a stable surface. These structures were improvised on the spot, leading to inconsistent results and varying preparation times. 

After reviewing previous methods and studying the digitisation process for oversized foldouts, the team documented key details such as item positioning, available space, options for secure support, and the unfolding process for foldouts. With these factors in mind and following several meetings and discussions with the Imaging team, Conservation proposed a new model designed to standardise the process, offering greater stability and efficiency suitable for a large-scale digitisation project. 

The main principle of the proposal involved creating two L-shaped foam pieces positioned around the item, with an extension piece to form a surrounding C-shape. The idea is that the L-shape would have enough width to compensate for any gaps in between when the foldout is unfolded.

Here is a simple model of the initial idea: 

Fig.2, 3, 4, 5: L-shapes placed around the item with and without extension piece, and with and without foldout

After finalizing the design, I began cutting the foam into the L-shapes with Armando Ribeiro, the Senior Imaging Technician leading the collaboration from the Imaging team. We decided on two foam thicknesses—12 mm and 28 mm Plastazote foam from Preservation Equipment Ltd (PEL)—to keep the process straightforward and efficient. By working with just two thicknesses, it became easier to estimate and adjust the necessary height, simplifying preparation.

Fig. 6, 7: Using previously cut foam blocks as template for next batch and making incision marks on the foam to prepare for cutting.

Fig. 8, 9: Visible incision lines on the foam blocks ready to be cut and cutting foam with template above the block using ruler and knife.

With the foam pieces cut, we trialed the new system using an IOR/P book, a common type in this phase of the project. The L-shapes fit neatly around the item, and the small extension piece could be slid into place for additional support as needed. With pre-cut foam blocks, the setup required no additional preparation—just arranging the foam pieces around the item and stacking them until reaching the desired height to match the foldout’s location. However, during our first trial, we found that for longer and wider foldouts, maintaining stable support on all sides was challenging.

Fig.10 a, b, c, d and e Series of stacking and using new tool with IOR/P collection item with a large, attached foldout

We returned to the drawing board to address this issue and collectively decided to add a larger rectangular support piece to the system. This piece would be used for much larger foldouts (A3+), placed alongside the L-shapes to create a uniform platform better suited to these oversized items.

Fig.11, 12: Updated model of L-shape system with additional larger foam piece and with foldout using large foam piece.

Fig. 13, 14: Preparing structure with the updated model adding the large rectangular piece, and an oversized attached foldout successfully folded out and supported with photography paper underneath.

After testing the updated model, we found it successfully supported larger foldouts. To demonstrate this, Armando took test shots to compare the captures of attached foldouts using the old system during digitisation and after, implementing the use of this tool to demonstrate the difference. Alongside the demonstration shots, we also made two short films demonstrating the practicality of the new approach compared to the previous method.

Fig.15 a, b, c and d Previously used system for attached oversized foldouts (this example is excluding photography paper usually placed on top of the foam to create an even background)

Fig.16 a, b, c and d New system using standardised shapes (this example is excluding photography paper usually placed on top of the foam to create an even background)

Please watch these two videos demonstrating the previous set up preparing attached foldouts and the new setup :

Old setup video:

New setup video:

With the new system, Imaging technicians could place the foam pieces quickly and directly, without constant adjustment to their setup. The three distinct shapes provided a clear, consistent structure, allowing them to work with greater speed and confidence. This tool allowing a streamlined, standardised process is proving  to be particularly valuable in a fast-paced, mass-digitisation environment, where efficiency is essential. 

Collaboration between Conservation and Imaging teams has proven invaluable in the development of this tool. By combining our unique skill-sets and insights, we were able to create a solution that not only enhances efficiency but also leads to a much safer handling practice, providing stability for collection items throughout the digitisation process.  

Collaborations like this foster a deeper understanding of each team’s needs and challenges, inspiring innovations that improve workflows and generate new tools for future projects. I’m thrilled that this collaboration resulted in a more stable, user-friendly support system, safeguarding valuable collection items during digitisation.  

This tool is now also being utilised by other teams within the project. In Conservation it is being used to support treatments of attached foldouts, providing a lot more stable setup and platform for e.g. treatments involving weights. Map curators in the cataloguing department are also benefiting from this tool when studying and cataloguing large, attached maps. 

When IOR/F/4/1767 was added to the British Library Qatar Foundation Programme (BLQFP) digitisation workflow, it immediately aroused curiosity. 

The volume itself is large, heavy, and fascinating. Its sheer weight, combined with the multiple areas of damage, made it difficult to handle properly. At first, I found myself puzzled—unsure of how to organise my workspace or where to begin the condition assessment. As a result, the book sat for a few days in the studio, waiting for me to gather my thoughts and decide how best to proceed. 

But IOR/F/4/1767 is no ordinary item. It's a piece of history that sparks the imagination. It's more than just a document to be conserved, catalogued, and digitised.

Img. 1: IOR/F/4/1767

Looking at this volume, I don’t just see a book—I see an ancient grimoire, filled with secrets. I see the wear and tear of time, the handiwork of a bookbinder who, long ago, had to find a way to fit a vast collection of loose documents into one single volume. I see a binding that was designed to hold pages that would be opened repeatedly, and I can imagine the last reader who, upon opening it one last time, must have hoped the binding would hold together just a little longer. 

As I gaze at this book, I am transported into a world of both practicality and wonder—a reminder that even seemingly mundane objects have fascinating stories to tell. And not to lose this, I requested a 3D model of it. 

At the British Library, we place great value on the unique features we uncover during our work, and we aim to preserve these qualities while ensuring the item’s longevity. 

IOR/F/4/1767 is heavily damaged: the spine cover is detached, and the once functional springback mechanism that allowed the book to lie flat when open has broken. The boards no longer provide adequate protection for the text. 

This damage, however, presents an opportunity to document the construction of the book in detail. I can see the sewing threads traveling up and down through the sections, creating a distinctive pattern on the spine. This is where a broken binding can be a blessing—it allows me to record a precise description of the sewing pattern and the board attachment system. 

Part of my work in this digitisation project is to explore various treatment options, considering both the physical condition of the book and the conservation for digitisation guidelines. The challenge was to complete the work within five hours—while still ensuring that the item would be safe for handling and its information accessible. 

After gathering detailed information about the volume, including photographs and a thorough description, I considered three possible treatment approaches.  

• Bespoke Box: Place the book in a custom box as it is, with limited access in the reading rooms due to its fragile condition. This option would make the book unsuitable for digitisation. 
• Partial Disbinding: Partially disbind the book by removing the spine, boards, and endleaves, and then cutting the sewing to separate the text-block into smaller sections. This would allow the item to be digitised as a series of booklets. 
• Full Disbinding: Completely disbind the book—removing the spine, boards, endleaves, and sewing. In this case, the book would be digitised as a loose-leaf file. 

These options were evaluated through a risk assessment, where I weighed the pros and cons of each.  

After discussing with my colleagues—curators, imaging technicians, and other conservators—I ultimately decided on the partial disbinding treatment. 

The process of digitising IOR/F/4/1767 was both an ethical and a personal experience. The 3D model created is an attempt to capture my initial impressions of working with this fascinating book. Digitisation cannot do full justice to its impressive dimensions, its old archive scent, or its 15 kilograms of dusty paper, cloth, and boards, all of which must be left to your imagination. 

This is just one of many curious items hiding in the British Library’s stacks. Each book, like IOR/F/4/1767, holds its own story—waiting for someone to unlock them.

In preparation for the Animals: Art, Science and Sound exhibition, Conservation assessed the suitability for display of over 150 BL collection items, of which just over 120 items actually made it into the exhibition. Seventy of these items came into the conservation studio for treatment prior to being displayed. The kind of treatment for each item varied greatly. Some volumes needed intensive treatments because the covers had become completely detached, and others just needed some minor care, such as tidying board edges that had become split and frayed. Some of the paper items needed tear repairs or flattening because they had been stored rolled or folded and many of them needed window mounting so they could be framed or displayed vertically.

The conservation work for all the items was shared between many conservators in the studio. The work started in January, giving team members enough time to complete their treatments prior to the install of the exhibition in March. Conservation play an integral part of the exhibition process and without the support we provide, many of these wonderful items would not make it into the show.

Below, three conservators discuss a few items that came through the studio for treatment ahead of the exhibition.

Amy

I worked on several volumes for Animals.  My favourite was Or.917, which contains very detailed paintings of whales. . My attention was immediately caught by two in particular – as well as being beautifully painted they both have rather evocative facial expressions!

Painting of a killer whale

Painting of a whale with barnacles

The most badly-damaged book was an early nineteenth-century volume entitled Fishes of the Ganges (Mss Eur E72). When the book came to the conservation studio the paintings themselves were in good condition, but 200 years of usage had taken their toll on the volume’s binding. The green leather of the spine was badly abraded and several pieces of it were missing. This posed a structural risk to the book, as it made it more likely that the boards would become detached at some point in the future. The red-brown paper which covered both boards was also not in a good state, with the pigment faded and rubbed away and pieces missing at the corners and edges of the boards.

Mss Eur E72 before treatment

As conservators our aim is always to retain as much original material as possible when carrying out treatment. My repairs to the marbled paper were very minimal. Using acrylic paints I toned a piece of Japanese handmade paper to a similar colour to that of the original, which I then used to fill in the gaps on the corners and edges of the boards. The damaged leather required a more interventive approach. After careful consideration I concluded that it was not possible to both keep the original leather and reinforce the binding structure. I therefore replaced the old leather with new green goatskin, but retained the old pieces so that readers can still access these remnants of the original binding. An additional result of this treatment will be that when Fishes of the Ganges returns from exhibition it will be robust enough to be consulted by readers and researchers without (hopefully) sustaining further damage.

Mss Eur E72 after treatment

Veronica

The animal protagonist of a volume I treated for this exhibition is the horse. ‘The Anatomy of the Horse’, 1766, a printed book by the British painter George Stubbs, includes exquisite etchings engraved by Stubbs itself, which are anatomically accurate and elegant. The binding is a purple quarter leather binding with purple covering cloth on the sides of the boards and parchment reinforcement on the corners beneath the covering material. The leather spine is gold tooled with the author’s name, title and place and date of publication. The numerous plates in the text block were printed on thick laid paper.

Tab IV. Exhibition opening page.

The binding was in poor state of condition, with both boards detached, delaminated and with missing areas, and the cloth and parchment covering materials on the corners considerably abraded. The leather was split along the spine edges and was heavily worn and coming unattached on the spine, with the grain layer flaking heavily, and some missing areas at head and tail on the endcaps, along the bands and along the edges. The gold tooling on the spine was partially missing.

Left leather join split.

Highly degraded leather spine.

The conservation treatment started with the consolidation of the board corners, by reconstructing the missing areas with layers of Japanese paper adhered with a reversible adhesive. Next, we stabilised the parchment board corners with Japanese paper. The boards protected the text block again!

Once the treatment of the boards was completed, we proceeded with the removal of the old spine lining which was acidic and inflexible and caused the volume to not open well. For the lining removal, we used a poultice, locally applied to the spine to soften the lining materials and adhesives used in the past. The new spine lining, made of Japanese paper and aero-cotton, was strong and flexible and has the function to suitably support the text block spine during opening.

For the treatment of the highly degraded leather spine, together with the exhibition and loans manager and the departmental curator, we carefully evaluated the most suitable option.  Considering that the leather spine’s original state was already been lost and had no historic significance, we decided to apply a new leather spine on the book, gold tooled in the design of the original, and to keep the original pieces, consolidated, in a polyester pocket, secured into the box. With this solution, the volume could be safely displayed and handled, while as much as possible of its physical integrity was retained, with the original spine pieces available for research.

The leather reback on the spine was carried out with a goatskin leather that matched the colour and grain of the original one and was worked to the desired thickness. The treated book was finally housed in a phase box.

Left board after treatment.

The original consolidated leather spine is attached by means of Western handmade paper strips to a Melinex pocket sealed on all sides and to the box where the volume is housed.

New leather spine with gold tooling.

Storm

Historia Aethiopica is a beautiful parchment bound volume I helped treat for display in the Animals: Art, Science and Sound exhibition. This volume included three foldout folios that protruded from the text block even when folded in resulting in heavy creases and weakened paper that had led to tears and areas of loss. I surfaced cleaned the display pages and other pages I treated which displayed surface dirt, to prevent moisture from any materials used in the treatment from causing the dirt to further bond to the surface and to improve the overall appearance of the object.

Verso of opening page during tear repair treatment

I repaired all tears and areas of loss on the display page, and other fold out pages, using toned Japanese tissue so the repairs were subtle and did not draw attention, and wheat starch adhesive, a reversible water-soluble adhesive.

The display page pre-treatment

The display page post-treatment

I used a heated spatula, with a barrier layer to protect the paper, to reduce some of the heavier creases and to flatten the corners as they were heavily curled. I also used the heated spatula in combination with some wheat starch adhesive to strengthen the edges of the page as they were extremely thin and weak, therefore were at a high risk of further deterioration.

Using a heated spatula to flatten a page’s corner

There was also damage to the binding, a tear at the top edge between the left board and the spine, which would likely have deteriorated further during exhibition, as it would be displayed open causing more stress to this area. I repaired this by inserting a piece of unbleached shirlan cotton adhered with a mixture of EVA and wheat starch adhesive to hold the board and spine together to reduce the risk of it tearing further whilst on display or during future handling.

The binding repair during treatment

Damage to binding

Binding repair

Both the head-edge endband and the tail-edge endband had also become almost completely detached from the text block, thus needed to be repaired. As I was unfamiliar with this type of treatment I closely observed as my mentor, Veronica Zoppi, undertook the treatment to the head-endband. This was incredibly educational as I was able to take photos and short videos of each treatment step whilst asking questions, which allowed me to make detailed notes complete with diagrams for future use and to treat the tail-edge endband.

First, I cleaned the endband and spine edge of the textblock using Konjac and Xantham gel, to improve the appearance of the endband but also so the repair materials would adhere properly.

Endband with gel on during cleaning

The endband was then fixed in the right position using a strip of Japanese tissue adhered to the bottom edge of the endband and to the spine of the Textblock, this was then left to dry shut.

Japanese tissue holding endband in position drying

To reattach the endband, I sewed through the text block, around the endband core, passing again through the centre of some sections in the text block, marked by paper markers. Usually when re-attaching endbands a conservator would have access to the spine of the text-block, as the spine piece would have been partially or completely detached. As this was not the case, to allow access to the spine, the volume was held open with weights, and then a curved needle was used to reattach the endband using linen threads that closely matched the original endband colours.

Section markers

The endband pre-treatment

The endband post-treatment

Conclusion

We hope you’ve enjoyed this glimpse into preparing items for display. All items are now on view in the exhibition. Book your tickets here.

Two Johann Sebastian Bach manuscripts in the British Library’s music collections - the autograph manuscript of the second book of the Well-Tempered Clavier (BWV 870-893) and of the cantata ‘Wo soll ich fliehen hin?’ (BW 5), recently came into the conservation studio. Treatment was undertaken with generous support from the Leche Trust.

This blog post focuses on the work undertaken on the Well-Tempered Clavier manuscript, which we are pleased to say is now complete.

Prelude in C Major (before treatment)

Effects of Iron Gall ink corrosion; Iron gall ink has been used since the middle ages and is found on many of our most treasured manuscripts, including the Lindisfarne Gospels, Beowulf and Magna Carta. The main ingredients of iron gall ink include iron sulphate, tannins from oak galls and water.

The Well-Tempered Clavier, Book II

Bach’s Well-Tempered Clavier (named after a system of tuning – ‘well temperament’) is one of those musical works that seems to justify the grand claims made about it. On the face of it, it’s a simple series of preludes and fugues in every key, major and minor: 24 in all, with two sets of these (giving the series its nickname ‘the 48’)’. But it’s also a jaw-dropping feat of compositional virtuosity, with Bach using his immense contrapuntal skills to weave together separate musical lines that fit together logically (but never too predictably) and yet also produce inspired music at the same time.

The British Library’s manuscript of the second book of the Well-Tempered Clavier (Add MS 35021 and Add MS 38068) is really a set of individual manuscripts for 21 of the preludes and fugues in the second book (those in C-sharp minor, D major and F minor are unfortunately not preserved here and must have been separated from the others at an earlier date). These were composed between 1739 and 1742.

Each prelude and fugue were mostly written out to (very satisfyingly) fit on a single side of an open folded page, avoiding the need to turn the sheet over – even if this at times means a bit of a squeeze. (No amount of squeezing was going to fit the lengthy prelude and fugue in A-flat major onto one side – this carries on over to the next side). Most of the pieces have been written out by Johann Sebastian Bach himself, apart from four and a bit which are known to be in the hand of his second wife, Anna Magdalena (those in C minor, D minor, E major, G major and the beginning of the prelude in F major).

Prelude in C minor (BWV 871), in the hand of Anna Magdalena Bach (before treatment)

Planning – what were the issues?

Unfortunately, even in optimal storage conditions, chemical and physical processes that pose a risk to manuscripts like these can, over time, still occur. We minimise threats to the collection as much as possible, by controlling factors like temperature and humidity, by using appropriate housing and by limiting access to, and use of, particularly vulnerable materials. However, even with strict environmental monitoring a common problem that is difficult to halt entirely is one of iron gall ink corrosion. Like much music of this period and earlier, these Bach manuscripts are especially at risk from this due to the make-up of the inks that were used – iron sulphate and acidic tannins in particular, which, over time, oxidise and ‘eat away’ at the paper. There’s an interesting blog post on this here:  https://blogs.bl.uk/collectioncare/2021/06/iron-gall-ink-on-paper-saving-the-words-that-eat-themselves.html.

When it came to planning conservation work, there were two main issues to consider. One was the corroding ink, as mentioned above. This is a particular problem where the ink is applied thickly to a small area, as tends to happen when writing expressive music notation. There were various examples of this on the Bach manuscript, ranging from visible holes to less obvious hairline cracks, making it extremely vulnerable.

The other issue was previous methods of preservation in manuscripts past - the manuscript pages had been bound into a single large volume, with each folio mounted into paper windows. This mounting paper had aged poorly, shown in the image below. Over time, its acidic properties have led to it discolouring and becoming brittle – meaning some were no longer secure in the binding. Tension from the acidic border was also causing stress to the centre of each bifolio of the manuscript, increasing the risk of splitting. It was clear that the time had come to give the manuscript a more appropriate long-term home.

Previous binding for Add MS 35021

Manuscript folios mounted in paper inlays inside (before treatment)

Conservation over time

Something that really made an impression in the course of this project was the changing approach to conservation over the years – understandable given evolving knowledge, the emergence of new technologies and shifting emphasis in professional standards. However, while treatment undertaken decades ago might appear questionable now, we are mindful that it was done with the best intentions given the tools and knowledge available at the time.

A good example is in relation to iron gall ink. There are very few ways to fully halt the corrosive effects of the ink and limiting the damage is often the only approach. However, one treatment that emerged in the mid-1990s involves an aqueous treatment, using a calcium phytate solution to neutralise the acidic iron content in the ink.

In recent years, the British Library has established processes for this treatment, but still it is not something to be undertaken lightly. While extensive testing prior to treatment ensures that both the structure of the paper and the ink will remain secure, nonetheless the process has the effect of washing the paper. Therefore, this results in the removal of dirt and accretions but also, potentially valuable but less obvious, evidence of historical use.  

The decisions are not easy, as weighed against the potential risk of sometimes losing potential sources of historical evidence, such as staining on the paper, is the risk of the manuscript deteriorating to such an extent that any kind of study becomes impossible.

Decisions

Given the iconic status of this manuscript, many people were involved in the decision-making and the project was a collaboration between curatorial and conservation teams. One objective that was clear was the new housing needed for the folios of the manuscript, which would keep them more secure.

In terms of treatment of the iron gall ink, we decided to take a cautious approach for now, and only apply the calcium phytate treatment to two folios, which suffered from different and more pressing issues from the others. These (which contained the A-flat major prelude and fugue, ff. 13 and 14), had been removed from the bound volume more than a century ago. At different points since then they had received conservation work of differing levels of invasiveness, including a coating of transparent heat set tissue applied to one side of the fugue and repairs along the fold of that page too. The aim in focusing a higher level of treatment on these particular folios was to stabilise the corrosive properties of the ink on one of the most problematic examples among the Well-Tempered Clavier manuscripts, and also to reduce some of the ill effects of previous treatments. This work would also make it possible to safely rehouse these folios in the same way as the others, removing them from their unsuitable temporary storage.

Prelude in A-flat major, f. 13v, showing coating of heat set tissue.

Conservation work begins

All our manuscripts are special and unique of course, and receive due care and attention to ensure their long-term preservation. Often there are particular manuscripts that are so iconic that you find yourself to be quite awestruck in their presence, this was certainly the case here and it was a wonderful moment when the volume containing the manuscripts was unpacked in the conservation studio. We took a moment to listen to the pieces as we looked at the score, we felt humbled in that moment as we contemplated the music that had inspired so many, as the notes on the page seemed to dance before us.

After thorough documentation and testing, treatment began by disbinding the volume and removing the folios from the acidic inlay paper; this was done mechanically using a poultice of sieved gelatine mousse. Whilst removing the old acidic paper mounts we uncovered the edge of the text previously covered by the inlay.

Removing remnants of acidic paper mounts during the calcium phytate bath

Aqueous treatment of the two folios

The treatment of folios 13 and 14 was achieved in three stages: first the documents were washed then treated with calcium phytate and then calcium bicarbonate. This helped stabilise the corrosive properties of the ink and remedy some of the ill effects of the previous treatment. 

Prior to immersion, multispectral images of these folios were taken by our imaging scientist, ensuring we have a clear record of the manuscript prior to treatment. Multispectral imaging captures image data within determined wavelength ranges across the electromagnetic spectrum. It can be used to examine discolourations and staining, by comparing the "spectral fingerprint" of an accretion to a known chemical substance. It can also reveal things that are only visible on different parts of the spectrum and allow us to capture the true colours of the image to accurately assess any ink changes after treatment.

One of the series of multispectral images

The existing condition of these particular folia made them a priority to treat in this way, but the experience of doing so will allow us to weigh in the balance the benefits or not of undertaking similar treatment on other folios in the future, should the degradation of the corrosive ink progress. For now, fragile inks on the other folios of the manuscript have been supported with a very fine toned Japanese tissue and gelatine using a low moisture technique. This was carried out over a light box to ensure any weakened areas of iron gall ink were spotted.

After Treatment

All the folios have now been housed individually in a more sympathetic, double sided mount. This rigid mount allows each page to be correctly supported and viewed in full and is suitable for both storage and exhibition display, minimising the need for handling or further work. The mounted folios were then stored in several bespoke acid-free phase boxes to offer additional protection on the shelf.

The conserved folios in their new mounts (after treatment)

Prelude in G major (BWV , f. 23r, after treatment)

Conclusion

Thank you to the Leche Trust for their generous support which allowed the items to be conserved and ensured that the manuscripts themselves are now better preserved and protected for posterity.

The British Library’s responsibility as custodian of these iconic examples of Bach’s creativity involves finding a balance between protecting the physical manuscripts and finding ways for their appreciation by a wide audience. High-quality digital images are a key tool for providing access, but this conservation treatment will also make it possible for researchers to work with the original material where this is necessary – further enhancing our understanding of Bach’s creative practise. It is also now safer to exhibit these iconic collections beyond the reading room, in our gallery spaces, where you can join us and experience the real thing.

Samantha Hare and Chris Scobie

Eyob Derillo, Curator Ethiopic and Ethiopian Collections.

Little is known about the secrets that Ethiopian Christian manuscripts retain inside their covers.  In addition to the texts that cover the full range of topics, from religion to magic, or from poetry to medicine, the iconic bindings of Ethiopian manuscripts hold more than we might imagine. Distinguished by their hard wooden covers or elaborate tooled leather bindings, some codices have preserved historical textiles attached to the inner surfaces of the book boards. These rare fragments have been protected from environmental damage and are in excellent state of preservation.

It’s important to note that there are conservation challenges for this type of material, one of the main roles conservation plays is to limit damage by the effects of light, temperature and pollutants, whilst still providing public access to the manuscript collections.

As curator for the Ethiopian Collection I have been working towards uncovering the number of Ethiopian manuscripts in its collection that contain these textiles inside their bindings. Formed from three major acquisitions, the BL today holds more than 600 Ethiopian manuscripts. The Harley Library collection included the first accession of Ethiopian manuscripts in 1753. In 1846, another 74 codices were acquired from those collected by missionaries of the English Church Missionary Society.  The bulk, and the largest group of books incorporated into the collection, came from the punitive expedition to Ethiopia in 1868.  The Magdala (Maqdala) collection, resulting from the British expedition sent to Ethiopia in 1868, consists of 349 manuscripts from the royal library assembled by King Tewodros II (1855-68).

Separately, in June 2021, the results of a pilot research study conducted on textile pastedowns on the inner covers of 154 Ethiopian manuscripts held in Ethiopian repositories and Western institutions, including the BL’s, were presented at the “Textiles in Manuscripts” workshop. At this workshop, organized by The Book and the Silk Roads project at the University of Toronto and hosted by the Institute for Advanced Study in Princeton, 500+ participants explored the large variety of textiles from across Eurasia found inside books, covering manuscript paintings, in bindings, and on inner and outer covers. Many of the textiles found inside the Ethiopian manuscripts in the study were produced in textile centres in India, Europe, and the Near East and were part of Ethiopia’s engagement in vibrant Indian Ocean/ Red Sea trade networks, or brought as gifts. A striking Iranian textile dating from the 19^th century can be seen in Fig. 1, and a Turkish brocade from the late 16^th to early 17^th century has been preserved in manuscript Or 534, Fig. 2.

A multi-disciplinary team of scholars including textile experts from the V&A and Manchester Metropolitan University is now in place to conduct an ambitious research project that will address questions arising from the information that can be uncovered from these textile fragments. The manuscripts date from the 15^th to the 19^th centuries. The project will work to reveal such properties of the textiles as composition and structure, that will assist researchers in determining their time of manufacture and place of origin. This information will strengthen the investigation of Ethiopia’s role in the global textile trade network, one that stretched from East Asia to Western Europe. The team will seek to understand the use of textiles in manuscript bindings from cultural, social, and artistic perspectives. One may ask whether they were a primary component of the binding process or added to the book as decorative elements? What was the role of imported textiles in society? Was there a religious meaning ascribed to them? An important aspect of this research is the use of textiles to date uncertainly dated manuscripts.  Finally, the project will help uncover changing socio-economic norms in Ethiopian society from the 15^th to the 19^th centuries.

Textile pastedowns preserved inside 15^th- to 19^th-century Christian Ethiopian manuscripts represent a rare collection of material evidence that will assist researchers and conservators in their work with late medieval and early modern textiles and objects from Ethiopia and across Eurasia.

Fig.1 Or 617 Discourses for the Festivals of the Archangel Michael, 1800-1899, British Library,
Textile: Iran, woven, cotton ground with silk brocaded patterns, 19^th century.

Fig. 2 Or 534 Psalter of Christ, 1582, British Library, London
Textile: Turkey, woven silk 1570-1630, British Library  OR 534.

Fig. 3 Or 646 The Miracles of Mary, 1739.

Fig. 4 Or 634, folio 8v. The Miracles of Mary, 18^th century. Ethiopian artists were also incorporating local and imported textile design patterns in their paintings.

Fig. 5 Or 9036 The Psalms, 18^th century.

Eyob Derillo

You may have seen a recent conversation sparked by one of our ‘Before and After’ conservation posts on the Library’s main social media channels. This may have got you wondering how conservators decide on the best treatment methods for collection items. In this blog we are going to dive deeper into the treatment of the volumes pictured in the Before and After images, giving further insight into the many considerations a conservator makes when treating an item.

Conservators at the British Library have to balance the future use of the book with the preservation of historic evidence. In a working library like ours, books are used by readers and our treatments must take this into account. The set of manuscript volumes pictured in the recent social media post are an example of this decision-making process and posed an interesting yet familiar conservation challenge.

The Thurloe State Papers volumes I-VII date back to 1742 and arrived in our conservation studio in poor condition. Each book exhibited similar degrees of damage and deterioration including detached boards, loss of endbands, severely degraded leather on the spines, splits in the textblock with damage to the sewing structure, and very worn and abraded boards.

These are highly requested collection items, and without thorough treatment would no longer be available for reference. Enabling access to readers is one of the BL’s core purposes and our Conservation department works hard to facilitate public access to our national heritage by ensuring that our books are in good condition in order to be handled and read without risk of further damage to the bindings. 

Thurloe's State Papers Vols I-VII prior to conservation. All the volumes had detached boards with severely damaged edges and corners. In this condition they cannot be issued to readers.

The top of the volumes showing ingrained dirt on the textblock and the loss of all the leather headcaps and silk endbands apart from a few remaining fragments.

Planning a conservation treatment involves a complex range of considerations from different fields including material and chemical science, preservation, historical context, value, ethics as well as the suitability of practical techniques and available time and resources. 

We follow a Code of Ethics which helps inform the process and to ensure that we are asking the right questions. Conservators use their professional judgement in combination with discussions with curators about the context of the items within the Library's historic collections and so it is a collaborative approach.

The most common form of damage that we find in Library collections is board detachment. This prevents books from being issued to readers due to the risk of damage to the textblock or loss of material.  There are a variety of causes of detached boards, including ageing of materials and general wear and tear from use.

Because a book is a physical object with moving parts, the action of opening and closing the boards can put a strain along the joint area, which can cause the covering material and sewing supports to break - resulting in detachment of the boards. 

There are various techniques used to reattach book boards.  Often, a volume needs to be 'rebacked' as part of the process of reattaching the boards; repairs are made to the textblock, sewing structure and endpapers and then new spine coverings are applied and carefully inserted under the existing leather on the boards. This process necessitates the removal of the existing spine coverings as it is often the case that strong and durable repairs cannot be undertaken without access to the spine of the volume.

An ideal conservation treatment would involve the re-use of original material wherever possible in order to minimise any aesthetic change to the item. When rebacking volumes it is our practice to, where appropriate, reattach the original spine pieces back onto the new spine. This retains the visual appearance of the book whilst providing a strong and durable repair. However, if the original material is too degraded to be reattached to the book - as in the case of the Thurloe State Papers - we need to consider other options.

The original spine leather was degraded and worn away with splits and cracks around the raised sewing supports as well as up and down the spine.

Many of the endbands and headcaps were missing on all seven volumes. 

As you can see from the close-up photograph, the original spine leather was very thin, degraded and fragmented. It was also adhered directly onto the spinefolds of the textblock paper as part of the 'tightback' binding structure making them very difficult to remove intact due to their fragility.

If we did reattach these spine panel fragments they would, in a very short time, wear away through use and be completely lost to researchers now and in the future.  So whilst we couldn’t reuse the spine panels, we did carefully remove and store them with the collection item. This way, they are preserved along with the bindings for future reference.

The remaining spine fragments were too fragile to be reattached and have been stored with each volume in its protective box.

Sometimes ‘Before and After’ photographs can look like quite a dramatic change to the object, but in this case only the spines of these volumes required replacement. The original boards were reused even though they were severely damaged.  The worn-down board corners were rebuilt and re-covered in new leather. Along the exposed and abraded board edges, the original leather was carefully lifted and new leather inserted underneath in order to preserve as much of the gold tooled edge decoration as possible.

An example of the damaged board corners prior to conservation.

Board corners after rebuilding and covering with archival calf leather.

Where the board edges were exposed, new leather was carefully inserted underneath the existing leather whilst retaining the gold tooled edge decoration.

The materials used in our conservation treatments are selected for their proven archival qualities, strength and durability.  Materials such as linen fabric and threads, handmade paper and wheat starch paste have been long used in traditional bookbinding, as is the ‘rebacking’ process of covering spines with new leather or cloth and decorating with gold leaf.

Whilst considering how to carry out the finishing on the Thurloe State Papers, it was decided to use a simplified version of the gold leaf lettering and decoration. This was partly because we do not have the historic finishing tools used by the original binder to be able to replicate the decoration exactly.  Secondly, this hand craft is highly skilled and very time-consuming - and we have to justify the amount of time spent on decorating individual volumes when there are so many other books needing conservation in the Library.

Spine of Volume 1 following conservation treatment

Left board of Volume 1 following conservation treatment

Conservators take great care to match the colours of new materials added so that they appear sympathetic to the existing material. In this case, the new spine labels were made of red leather and even the endband threads dyed to match the originals.

Primary endbands were sewn in plain linen thread followed by secondary endbands in silk, dyed pink and green to match the original thread found in the volumes.

The completed endband.

We enjoyed reading the range of comments these Before and After photos inspired. It’s great to see that so many people care about the preservation of historical books - and the range of comments show that not only that there are a huge number of factors to weigh up in making treatment decisions, but also that several different approaches could be used to achieve a similar outcome.

Conservators have to consider that books are mechanical objects, not just historic artefacts, and have moving parts that need to function in conjunction with each other in order for the book to be used. This is often dependent on the construction materials and methods used and is one of many other factors, such as historical context and the status of the object, which are taken into consideration when planning conservation treatments at the British Library.

If readers are interested in learning more about books as 'dynamic objects', there was a recent Institute of Conservation talk about this very subject, which you can watch on the Icon YouTube channel.

Keep an eye out for an upcoming blog post which will discuss more broadly the varying approaches to conservation decision-making in the Library’s Conservation department.

One of seven volumes of Thurloe's State Papers now fully conserved and able to be accessed in our Reading Rooms.

Vicky West ACR, Book Conservator

Nicole Monjeau, Preventive Conservator

Elisabeth Randell, Conservator (Books)

Figure 1: IO San 3251 before treatment.

The British Library has a large collection of birch bark manuscripts. This particular manuscript was flagged for conservation because it was requested for digitisation. Unfortunately, due to its condition it was unable to be safely handled.

This manuscript known as The Mahārnava, from Kashmir, was written in Śārada on birch bark and dates from the 19^th Century. The text discusses Hindu religious law (Dharmaśāstra) dealing with practices for removing and healing diseases and bad influences resulting from the deeds in a former life (Karmavipāka).

Figure 2: IO San 3251 front cover.

Figure  3: IO San 3251 back cover.

The text was compiled probably in the 14^th century, and so the text isn’t so uncommon, however this manuscript still has its original limp vellum cover, which makes this example quite unique. The treatment plan for this object needed to fit for purpose, dealing with it more as an object rather than a manuscript that would be requested and used as a book.

Figure 4: IO San 3251 fore edge before treatment.

Made from the bark of birch trees, each page is made of a laminate of birch bark - in this manuscript laminate of pages vary from 3 to 7 layers of birchbark. Layers of birch bark are held together from the natural resins and gum found in the birch bark, however overtime they naturally dry up and lose their adhesive properties, leaving many pages delaminated.

Figure 5: IO San 3251 delamination and tearing.

Almost all pages suffered from large tears and cracks, predominantly following the horizontal grain of the bark. The general fragility from inherent acidic characteristics of birch bark are made worse by the horizontal brown nodes which are more brittle than the surrounding bark due to a higher concentration of lignin, a material that gives off acids as it ages.  

Figure 6: IO San 3251 delamination and tears along nodes.

Figure 7: IO San 3251 old repairs.

The nature of this material and method of production required a much different repair technique than would be employed for paper-based objects. For paper repairs stabilising a tear with a Japanese tissue on the recto or verso is a common technique. However, with this manuscript being made up of a laminate of organic material, it required a more considered approach.  Keeping in mind a balance of tension, and the many layers making up each sheet, a weaving technique was used to weave the repair tissue between the delaminated and cracked areas, where possible.

Figure 8: example of repair options: inserting repair tissue between delaminated layers or weaving repair tissue between tears.

Figure 9: IO San 3251 tear and delamination before treatment.

Figure 10: IO San 3251 inserting toned kozo tissue on top of tear and between delaminated layers.

Figure 11: IO San 3251 tear and delamination after treatment.

Methyl cellulose 4% was chosen as the adhesive for its elastic nature, allowing the repairs and original material to flex naturally, and not become stiff as the old repairs.

Pages that had become loose were reattached to each other, weaving the tissue around original sewing to secure them in place.

Figure 12: IO San 3251 Japanese tissue hinges attached to both pages. Adhesive is applied to the Japanese hinges and attached to one another, repairing the broken spine fold. 

All repairs have been carried out and now the manuscript is able to be safely handled, pages can be turned without risk of further catching and tearing. Digitisation will be the next step for this manuscript so it will be available to a much wider audience, with minimal disruption to the physical object.

Figure 13: IO San 3251 fore edge after treatment.

Figure 14: IO San 3251 fore edge before treatment.

Figure 15: IO San 3251 after treatment.

Mary Horrell, Conservation Support Assistant, and Mark Oxtoby, Collection Care Workflow Coordinator

The Felbrigge Psalter’s decorative 14c covers (pictured below) are the oldest known examples of English embroidery on a book and a prime example of the type of binding this project is working to protect. 

Felbrigge Psalter

Although faded with areas of lost stitching the design is clearly visible. Luxury bookbindings like this have covers of fragile silk, satin, and velvet and are often decorated with pearls, sequins and gold and silver embroidery threads, all of which may require different approaches to conservation but should all be stored in a similar way.

The project to re-box collection items with ‘at risk’ embroidered and textile bookbindings has been ongoing since 2016 and has involved colleagues from various teams including; Conservation, Western Heritage Collections, Basements, Collection Care North and Reader and Reference Services.

C.108.aa.7: 17c English prayer book.  The design has a stunning trompe l’oeil effect which can still be seen despite the loose threads.  The spine piece has also been lost.

The first step of the project involved Maddy Smith, Curator Printed Heritage Collections, and Philippa Marks, Curator Bookbindings, selecting around 100 bindings which needed attention and preparing a preservation bid. Traditionally these items were boxed to resemble leather bindings on a library shelf, stored in sometimes abrasive slipcases, or in tight drop-back boxes lined with woollen fabric.

Maddy Smith (left) and Philippa Marks (right) reviewing some embroidered bindings.

Philippa says: ‘The Library’s collection of textile bookbindings is so rich that the problem regarding selection was not what to include, but what to exclude! An important first step was to identify the books which had been boxed in the past or were not protected at all. Boxing provided an effective and practical solution historically, but we now know some elements of the construction can put bindings at risk. Today conservators have a choice of modern materials, all of which have been tested by Paul Garside, Conservation Scientist, and will remain stable and protect the textile and embroidered surfaces’.

C.183.aa.6: enlargement of 16c English binding shows red and green embroidery threads, metallic coils and sequins which have oxidised (blackened).

At this point it was down to the Library’s Textile Conservator Liz Rose to devise storage solutions to protect these fragile bindings. Liz was invited to attend an embroidered books rehousing workshop at the Herzogin Anna Amelia Bibliothek in Weimar, Germany, where conservators from Germany, France and Austria discussed storage and handling solutions for these delicate structures to both prolong their lifecycle and enable access.

Liz says: ‘It was a privilege to be the only textile conservator invited to attend the workshop. The organiser, Jonah Marenlise Hölscher, from the Anna Amelia Bibliothek had visited St Pancras in early 2016.’

C.23.a.26: enlargement of late 16c binding design comprising pearls.

Following this workshop Liz pursued her idea of using standard sized phase boxes (these are archival storage boxes) lined with Plastazote®. The new boxes were made by Mark Oxtoby, Collection Care Workflow Coordinator in Boston Spa and then lined with removable Plastazote®, a type of foam. The bookbindings were wrapped in Bondina® (a smooth polyester tissue used for conservation).

C.65.k.9; enlargement of centrepiece of 16c Italian embroidered prayer book.

During the following period Liz and her colleague Mary Horrell, Conservation Support Assistant, consulted with colleagues from other Library departments to ensure that the change from 18c methods to the new approach was approved by all. Prototype phase boxes and bespoke inserts were constructed.

Peter Roberts, Basement 2 Manager, says: ‘The main consideration from the Operations side was how much extra storage space and what sort of storage would be needed when the items returned in expanded, padded boxes.'

‘We got an estimation of the expected dimensions, numbers and configuration of the new boxes from BLCC. We have begun moving four ranges of Case books (rare printed books) to provide enough shelf space to accommodate the new boxes and to ensure each item can be safely shelved. We recently attended a demonstration of the padded boxes so I will be able to brief my team on how to assemble the boxes and what to look out for if any parts go missing/get damaged with use.’

C.130.a.11; note the wear around the edges of the velvet covers of this 17c Danish binding and the raised decoration (called stump work).  The clasps (in the shape of a face) would cause damage to neighbouring books if not boxed.

The consultation stage of the project is now almost complete and a collection handling morning has taken place where Liz and Mary demonstrated the new storage solution to colleagues across the Library.

Philippa concludes: ‘I was so impressed by the way colleagues worked together, each using their individual skills and experience to ensure that these items, some of them 400 years old, last another 400 years ... at least!’

G.6319 19c French binding by Louis Janet. Enlargement shows the raised nap on the velvet covers at risk of abrasion.

The British Library's next major exhibition, Writing: Making Your Mark, opens 26 April and runs until 27 August 2019. In preparation for the exhibition, conservator Rebecca D'Ambrosio has been working on the conservation of one of the items which will be on display.

The story of a book through its binding

What does the cover and structure tell us about the story, provenance, use and journey of a book? Do they add value to the information it contains? The history of book binding has gone hand in hand with the history of writing. So, what happens if a covering is changed? Has anything been lost or gained? These are some of the questions we ask ourselves as conservators as we try to understand a book and consider how best to repair it.

The lost original binding: A Chinese and Western book

The book, titled Zi bu ji jie (Explanation of the Radicals of Chinese characters), introduces the concept of how Chinese writing works. It was made in a Chinese style binding in Macao, China in 1840, commissioned by an American man, Issachar Jacox Roberts as a gift for Walter Medhurst who was translating the bible into Chinese at the time.

The broken second binding: The British Library style

Many years ago the book was dis-bound from its Chinese-style binding and re-bound into a Western-style binding. The disadvantages of this binding are that it does not respect its original opening direction from right to left, it deforms the structure of the book and new sewing holes were made in the process.

In addition to all this, the western-style binding has become worn around all edges and the back board of the cover is detached.

The new conservation binding: Sympathetic to its origins

Rather than repairing the back board, it was decided with the Curator that this was an opportunity to return the book to a style of binding similar to its original.

Firstly, the spine was removed and the adhesive below was softened with the application of wheat starch paste. The Chinese book was now free of the Western binding but the remaining adhesive residue prevented the separation of the pages.

The tears and losses in the cover were repaired and the spine strengthened with a toned Japanese tissue paper and wheat starch.

Finally, because of the fragility of the book, new covers of a neutral-coloured Japanese paper were added, folded in the same way as the rest of the textblock pages. The whole was sewn together with linen thread re-using its original sewing holes and following the traditional Chinese binding pattern.

Adding to the story of a book

As conservators, knowledge of the history of the book format inspires every conservation treatment we carry out. We must take into consideration how our decisions will impact aesthetics, use and durability, historical aspect, value and significance. Every treatment will have a certain degree of impact on a book and adds to its story.

It was exciting to return this Chinese book to its original style, and learn more about its story as I added to it. Soon you will be able to see this book for yourself on display in the exhibition ‘Writing: Making your Mark’.

Rebecca D'Ambrosio