1. University of Pennsylvania, LJS 97 DS ID: DS748 Title: Commentarius in Claudii Ptolemaei Harmonica Author: Porphyry Place: Spain and Italy Date: between 1560 and 1580?
2. The Huntington Library, Art Museum, and Botanical Gardens, 17862a DS ID: DS9991 Title: Geometry text Author: Philipp Melanchthon Place: Wittenberg Date: 1553