1. IOR/L/PS/12/4190B Reference (shelfmark): IOR/L/PS/12/4190B Title: Coll 36/23(3) Indo-Tibetan frontier: maps of Tibet and Sino-Tibetan frontier; China Year Book Collection Area: India Office Records and Private Papers Languages: English Date Range: 3 Feb 1948-29 Sep 1948 Extent: 1 file