Hidden Stories postdoc Noam Sienna (right) examining marginalia in a 16th-c. printed Hebrew book with co-director of the Footprints project, Marjorie Lehman of the Jewish Theological Seminary.

A view under optical microscope revealing inclusions in the paper fibres of one of Cao Yuanzhong’s Avalokiteśvara woodblock prints (Toronto, Royal Ontario Museum 927.24). Photo: Jessica Lockhart

Detail of a sewn book - an 18th-c. medical compendium (sman yig gces bsdus). Toronto, Thomas Fisher Rare Book Library, Tibetan MSS 00029.