1. University of Pennsylvania, Oversize Ms. Codex 1797 Title: Schwebell zuem pulffer unnd feuuerwercken zue beraitten Author: Franz Helm Place: Bavaria Date: [circa 1598]
2. Free Library of Philadelphia, Lewis E 16 Title: Secrets of secrets Author: Pseudo-Aristotle Place: Germany
3. Free Library of Philadelphia, Lewis E 18 Title: De vinis Author: Arnaldus de Villa Nova Place: Germany Date: 1400-1415