1. University of Pennsylvania, LJS 286 DS ID: DS604 Title: Taḥrīr Uṣūl al-handasah wa-al-ḥisāb Author: Nasir al-Din al-Tusi Date: A.H. 890 (1485)
2. University of Pennsylvania, LJS 488 DS ID: DS723 Title: Mathematical texts Author: Luca Pacioli Place: Venice and Italy Date: after 1494