Blue Annals (Tib. དེབ་ཐེར་སྔོན་པོ་, Wyl. deb ther sngon po) — a famous historical work by Gö Lotsawa Shyönnu Pal (1392-1481) composed 1476. It was translated 1949 by G. Roerich with the help of Gendün Chöpel. It is one of the most consulted sources on the history of Tibetan Buddhism up to the fifteenth century.