When Jess began their treatment, they found that the book was generally in fair condition and mainly required surface cleaning, consolidation, and mending of tears and losses in the boards. The only exception was the gelatin film. About one-third of this film had been torn or ripped away and a large, clear dot of adhesive indicated that an attempt had been made to repair it. The film also had tears and losses at the edges, insect damage, and warping caused by humidity. Jess first detached the gelatin film from the board and then separated the fish and seahorse from the film using moisture to loosen the adhesive. They will replace the gelatin with a Mylar
encapsulation, reattaching the fish and seahorse to the Mylar using a paper v-hinge. The encapsulation will then be reattached to the pop-up.
When Jess’s treatment is complete and the pop-up book has been both stabilized and made more aesthetically
pleasing, it will be returned to the Winterthur Library, where it will be ready for display.
A printable PDF version of this story is available here. Previous stories on projects from the Department of Art Conservation are archived and available here.