1. IOR/L/PS/12/4213 Reference (shelfmark): IOR/L/PS/12/4213 Title: Coll 36/41 Anglo-Tibetan relations: Indo-Tibetan frontiers; Upper Siang (Tsangpo) Valley; establishment of outposts at Kaiko and Riga Collection Area: India Office Records and Private Papers Languages: English Date Range: 31 Jan 1938-24 Mar 1947 Extent: 1 file