1. Columbia University Rare Book & Manuscript Library, MS Or 10 DS ID: DS6597 Title: Bīst dar maʻrifat-i usṭurlāb Author: Nasir al-Din al-Tusi Place: Iran Date: 1299.
2. Princeton University, Islamic Manuscripts New Series no. 748 DS ID: DS13451 Title: Sharḥ-i S̲amarah-i Baṭlamyūs Author: Nasir al-Din al-Tusi Date: 1282-1529