1. IOR/L/PS/12/3111 Reference (shelfmark): IOR/L/PS/12/3111 Title: Coll 22/1 Indo-Tibetan frontiers: Abor country and Sadiya frontier tract, Upper Siang (Tsangpo) Valley: extension of Government Control; suppression of human sacrifice; establishment of outposts at Kacko and Riga Collection Area: India Office Records and Private Papers Languages: English Date Range: 5 Nov 1928-17 Nov 1930 Extent: 1 file