Restoration of a Marbled Leather Binding

This copy of The Seasons, by British poet James Thomson, was published in 1837. It is a small binding of about 4 x 6 inches, which was easily held in the hand or tucked in the pocket of its owner. The book has a decorative leather binding known as marbled leather. The effect was created by pouring acidic solutions across the leather to create striated areas of color resembling marble. 

When I received this book for treatment, the front board was attached only by its cords. The leather was split at the hinge on the front and back covers, a natural result of regular handling of an old, brittle leather binding. 

The fore edge corners and the hinges had previously been treated with a PVA-type adhesive (common examples of PVA adhesives are wood glue, white glue, or school glue), which created a clear, plastic-like coating that may have provided some protection but also may have contributed to further damage as the adhesive was stronger than the aging leather.

Other than some water damage staining at the spine edge of the pages, the text block was in relatively good condition. A folio in the first section of pages was loose and the interior hinges at the front and back were split just as the leather was split on the outside of the hinges. 

The split hinge at the front of the book allowed for access to the spine edge of the first section, so I was able to sew in the loose folio. The interior hinges were repaired with Japanese tissue and rice starch paste. The exterior hinges were repaired with brown Japanese paper and then further toned with watercolor to more closely resemble the original marbled leather. Once toned, the Japanese paper was sealed with a coating of Klucel-G/SC6000 which consolidates and serves as an added layer of protection as well as matches the sheen of the original leather.