Gibson, S. . (1903). Early Oxford Bindings. Illustrated monographs issued by the Bibliographical Society (p. 69). London: Bibliographical Society.
Gibson, S. . (1907). The Localization of Books by Their Bindings. A Paper Read Before the Bibliographical Society, February 20, 1905 (p. 22). London: Blades, East & Blades.
