The subject of this two-volume publication is an inventory of manuscripts in the book treasury of the Topkapı Palace in Istanbul, commissioned by the Ottoman sultan Bayezid II from his royal librarian ʿAtufi in the year 908 (1502–3) and transcribed in a clean copy in 909 (1503–4). This unicum inventory preserved in the Oriental Collection of the Library of the Hungarian Academy of Sciences (MS Török F. 59) records over 5,000 volumes, and more than 7,000 titles, on virtually every branch of human erudition at the time.