1. Columbia University Rare Book & Manuscript Library, MS Or 11 DS ID: DS6598 Title: Sī faṣl Author: Nasir al-Din al-Tusi Date: 16--?-17--?
2. Princeton University, Islamic Manuscripts Third Series no. 235 DS ID: DS13199 Title: Fārsī-i hayʾat Author: Nasir al-Din al-Tusi Date: 1627