Kāshī wrote 2 minor astronomical treatises: the Sullam al-samā’ or the Risāla kamāliyya, (completed March 1, 1407; dedicated to the vizier Kamāl al-Dīn Maḥmūd) deals with the sizes and distances of the celestial bodies, and the Mukhtaṣar dar `ilm-i hay’at (written 1410/1411) for a certain Sultan Iskandar, probably a nephew of Shāh Rukh and a cousin of Ulugh Beg; it is preserved in 2 Persian manuscripts in London and Yazd. In 1413/1414 Kāshī completed his Zīj-i Khāqānī (either dedicated to Shāh Rukh or to Ulugh Beg) which is also preserved in Persian copies. In January 1416, he composed by order of Sultan Iskandar, possibly the Qarā-Qoyunlu king, the Risāla dar sharḥ-i ālāt-i raṣd, a commentary on observational instruments, preserved in 2 Persian manuscripts in Leiden and Tehran. In the Nuzhat al-ḥadā’iq Kāshī describes 2 instruments that he invented: the “plate of heavens” and the “plate of conjunctions.” The first version of this text was finished in Kāshān in February 10, 1416, which is preserved in an Arabic manuscript in London. The second version was revised in Samarqand in June 1426. It is only known in a lithographic edition of some of Kāshī’s works, printed in Tehran 1888/1889. Kāshī also wrote numerous minor astronomical treatises. In his Ta`rīb al-zīj, preserved in Leiden and Tashkent, he translated the introduction of Ulugh Beg’s Zīj from Persian into Arabic, this translation being completed during Kāshī’s lifetime. Further he wrote the Miftāḥ al-asbāb fī `ilm al-zīj, extant in an Arabic manuscript in Mosul; the Risāla dar sakht-i asṭurlāb, on the construction of the astrolabe, extant in a Persian manuscript in Meshed; and the Risāla fī ma`rifat samt al-qibla min dā’ira hindiyya ma`rūfa, on the determination of the qibla by means of the “Indian circle,” extant in an Arabic manuscript in Meshed. The Zīj al-tashīlāt, seems not to be extant. The alleged al-Risāla al-iqlīlāmina (mentioned by E.S. Kennedy in Planetary Equatorium, p. 7) is a misattribution based on a misreading. Kāshī wrote 2 letters from Samarqand to his father in Kāshān which are very informative; it gives a unique glimpse into the court of Ulugh Beg and the observatory at Samarqand, as well as into the work and life of a medieval astronomer. [P. Schmidl] 