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
2. IOR/L/PS/12/3112 Reference (shelfmark): IOR/L/PS/12/3112 Title: Coll 22/2 Sadiya frontier tract and Balipara: allowances to Political Officers Collection Area: India Office Records and Private Papers Languages: English Date Range: 15 May 1924-24 Feb 1932 Extent: 1 file
3. IOR/L/PS/12/3113 Reference (shelfmark): IOR/L/PS/12/3113 Title: Coll 22/3 Future control of North East Frontier: Sadiya and Balipara tracts; Lohit Valley Road Collection Area: India Office Records and Private Papers Languages: English Date Range: 4 Feb 1920-22 Mar 1926 Extent: 1 file
4. IOR/L/PS/12/3114 Reference (shelfmark): IOR/L/PS/12/3114 Title: Coll 22/4 Assam: Annual Reports on Frontier tracts, 1928/29-1940/41 1942/43-1946/47 Collection Area: India Office Records and Private Papers Languages: English Date Range: 29 Aug 1929-11 Nov 1947 Extent: 1 file
5. IOR/L/PS/12/3115A Reference (shelfmark): IOR/L/PS/12/3115A Title: Coll 22/6 Excluded and partially excluded areas of Assam: constitutional position Collection Area: India Office Records and Private Papers Languages: English Date Range: 15 Oct 1936-16 Jul 1947 Extent: 1 file
6. IOR/L/PS/12/3115B Reference (shelfmark): IOR/L/PS/12/3115B Title: Coll 22/6 Excluded and partially excluded areas of Assam: constitutional position Collection Area: India Office Records and Private Papers Languages: English Date Range: 21 Jul 1948-8 Apr 1949 Extent: 1 file
7. IOR/L/PS/12/3116 Reference (shelfmark): IOR/L/PS/12/3116 Title: Coll 22/7 Burma-Assam border: Naga Hills and Sirap frontier tract; suppression of human sacrifices 1931-1932 Collection Area: India Office Records and Private Papers Languages: English Date Range: 8 Jun 1925-29 Jul 1947 Extent: 1 file
8. IOR/L/PS/12/3117 Reference (shelfmark): IOR/L/PS/12/3117 Title: Coll 22/8 Fortnightly reports on the Assam Tribal areas, Nov 1943 to Nov 1947 Collection Area: India Office Records and Private Papers Languages: English Date Range: 11 Jan 1944-2 Feb 1948 Extent: 1 file
9. IOR/L/PS/12/3118 Reference (shelfmark): IOR/L/PS/12/3118 Title: Coll 22/8 Fortnightly reports on the Assam tribal areas, Jan 1948 to Dec 1949 Collection Area: India Office Records and Private Papers Languages: English Date Range: 9 Mar 1948-22 Feb 1950 Extent: 1 file
10. IOR/L/PS/12/3119 Reference (shelfmark): IOR/L/PS/12/3119 Title: Coll 22/8(1) Programme of work for the North East Frontier Agency: McMahon line; establishment of control Collection Area: India Office Records and Private Papers Languages: English Date Range: 13 Sep 1944-5 Mar 1946 Extent: 1 file