Since the beginning of January, I have started to work on
the main collections at LHSA. Although the Wellcome Trust project to conserve
the HIV/AIDS collections is almost complete, my contract has been extended until June,
so you will be hearing more of tales from the conservation studio over the next
few months! During this time, I will be carrying out a range of conservation treatments
such as consolidation and repair of bound volumes, surface cleaning and tear
repair of flat sheet material, cold storage of x-rays, as well as supervising
volunteers and interns working on architectural plans. I am really looking
forward to the challenges that working with such a wide range of materials will
bring.
For this blog post, I thought I would focus on what I have
been working on for the past few weeks; the conservation of bound volumes. A
common problem for books in the LHSA collections is the occurrence of red rot.
For those of you who don’t work in a library, red rot is a degradation process
found on leather bound books. It is characterised by a powdery layer on the
surface of the book which, as archivists know, gets absolutely everywhere. It is also associated with the weakening of
the material, so along with red rot, you often find torn leather and abraded
edges.
Damage caused by red rot is irreversible. However, the spread of red rot
can be retarded by treating the leather with a consolidant such as Klucel G in
Industrial Methylated Spirit (IMS). First a museum vac with a low suction is
used to remove the loose powdery material from the book. Then, a 2% solution is
brushed on to areas affected by red rot and left to dry. Although this consolidates
the powdery material, it doesn’t cure the leather of red rot, it will just
prolong its life for longer. A slight darkening of the leather is sometimes caused by
application of Klucel G, so often test areas are carried out prior to full
application. Although discolouration of the leather is not ideal, it is sometimes
better than doing nothing at all and allowing further damage to be caused to the book
due to red rot.
In some full leather bound books, red rot can cover the
whole surface. In these cases, I decided not to consolidate the volume as it is
difficult to get an even coverage over the whole book without causing
streaking. Instead, with the help of volunteers Collette and Alice, I made book
covers to protect these books. We made these from 650gsm boxboard tied with
cotton tape. This allows for covers to be made without the use of adhesives,
which speeds up the construction of the covers and ensures that the book is not
affected by any potential off-gassing from the adhesive. These covers not only
contain all the red rot and stop it spreading, but also protect the books
whilst they are on the shelf. Often damage is caused on the shelf as adjacent
books can be scraped by the corners of the volumes being removed and replaced,
resulting in tearing of the leather.
Example of red rot found on books |
Using a Museum Vac to remove powdery material |
Using a brush to apply a 2% solution of Klucel G in IMS |
A full leather book rehoused in a book cover |
Example of book with torn and delaminated leather |
Another common problem in the LHSA collection is the
detachment of boards and spines from bound volumes. This is usually found in
books that are consulted frequently as the opening and closing actions causes
these areas to weaken. To fix this, I used a couple of repair techniques taught
to me by private book conservator, Caroline Scharfenberg, who also works at
Edinburgh University. To secure loose and detached boards, I used a strip of
fairly thick Japanese paper adhered to the inner spine joint with wheat starch
paste. Although further work can be done, this provides a surprisingly strong
repair and is suitable for the needs of the collection. If a spine has become
detached, a new hollow can be made from archival paper to reattach it. A hollow
is essentially a piece of paper that has been folded twice and glued together
to create a tube. This is then affixed to the spine and the original cover
material is glued to the hollow. When the book is opened, the hollow also opens
allowing the spine to move naturally. These basic repair techniques will extend
the life of the bound volumes significantly and prevent further damage
occurring.
The conservation of books is very different to the conservation of flat archival material that I am used to working with. Although techniques are similar, the composite and 3D nature of the book provides new challenges to me as a paper conservator. I hope to learn more book repair techniques in the future.
Book, before treatment with a detached spine |
Book, after treatment with spine reattached using a hollow |
The conservation of books is very different to the conservation of flat archival material that I am used to working with. Although techniques are similar, the composite and 3D nature of the book provides new challenges to me as a paper conservator. I hope to learn more book repair techniques in the future.