1. University of Pennsylvania, LJS 462 Title: Algorismus Author: Alexander of Villedieu Place: Spain Date: [between 1300 and 1350]
2. University of Pennsylvania, LJS 476 Title: Yesod ʻolam Author: Isaac Israeli ben Joseph Place: Spain Date: [1460?]
3. University of Pennsylvania, LJS 492 Title: Medical miscellany Place: Spain Date: [between 1425 and 1475]