Sheet 93O/13 [Wan Yangngun] First Edition 1910, reprinted 1943. Burma: Southern Shan States. 1st Edition 1910; Reprinted 1943 with major corrections. Surveyed 1908-09. Edition date 1910. Heliozincographed SIO Dehra Dun. Reg.No.2879 D'10 S.I. X–X'43. Black and brown printing; no boundary colour.