Sermones contra omnem mundi peruersum statum
Georg Morgenstern (Dates unknown). Sermones contra omnem mundi peruersum statum. Strasbourg: Wilhelmum procurator de Roperschwiler, March 1513.
This copy of Sermones contra omnem mundi peruersum statum (translation: Sermons against the whole perverse state of the world) is bound in a fragment of discarded vellum, or calfskin, which contains music used on Holy Cross Day (Sept. 14). Calfskin typically provided the best-quality parchment due to its creamy colour. The binder appears to have used the spaces on the music staff as a guide to line up the top two lacing slips.