This is the study of an extremely rare Persian ""Book of Ascension,"" which was written in Persian by an anonymous author and dates from the Ilkhanid Period (1256-1353). Christiane Gruber presents an English translation alongside the original manuscript text, together with critical commentary. The text appears to promote adherence, as well as to encourage conversion, to Sunni Islam - providing a fascinating insight into the interplay between artistic practices and missionary efforts aimed at promoting Sunni Islam in Persian lands during Ilkhanid rule.