Sheet 42H : Sheet J-43T Yasin GSGS 3919 First Edition 1942. Compiled and published originally SGI 1923 and revised to 1941. Surveyed 1929, 1931; part from NTF sheet 2 SW (3rd edition) and sheet 2 SE (3rd edition) 1908. Published WO 1942. Heliographed OSO 1942. 1,036/7/42F. Grid 0.