1. IOR/L/PS/12/4048-4087 Reference (shelfmark): IOR/L/PS/12/4048-4087 Title: Political (External) Collection 33: Siam (Thailand) Collection Area: India Office Records and Private Papers Languages: English Date Range: 1924-1950 Extent: 40 files
2. IOR/L/PS/12/4055 Reference (shelfmark): IOR/L/PS/12/4055 Title: Coll 33/7 Royal family Collection Area: India Office Records and Private Papers Languages: English Date Range: 6 Jun 1925-17 Jan 1940 Extent: 1 file
3. IOR/L/PS/12/4056 Reference (shelfmark): IOR/L/PS/12/4056 Title: Coll 33/8 Constitutional position Collection Area: India Office Records and Private Papers Languages: English Date Range: 24 Jan 1925-15 Oct 1935 Extent: 1 file
4. IOR/L/PS/12/4061 Reference (shelfmark): IOR/L/PS/12/4061 Title: Coll 33/12 Political situation Collection Area: India Office Records and Private Papers Languages: English Date Range: 13 Oct 1934-19 Aug 1937 Extent: 1 file
5. IOR/L/PS/12/4087 Reference (shelfmark): IOR/L/PS/12/4087 Title: Coll 33/26D Military Agreement Collection Area: India Office Records and Private Papers Languages: English Date Range: 15 Feb 1946-14 Mar 1946 Extent: 1 file
6. IOR/L/PS/12/4071 Reference (shelfmark): IOR/L/PS/12/4071 Title: Coll 33/18 Anglo-Siamese relations Collection Area: India Office Records and Private Papers Languages: English Date Range: 16 Jul 1936-1 Jan 1941 Extent: 1 file
7. IOR/L/PS/12/4058 Reference (shelfmark): IOR/L/PS/12/4058 Title: Coll 33/10 Relations with Japan Collection Area: India Office Records and Private Papers Languages: English Date Range: 15 Apr 1930-30 Dec 1939 Extent: 1 file
8. IOR/L/PS/12/4063 Reference (shelfmark): IOR/L/PS/12/4063 Title: Coll 33/12(2) Political situation Collection Area: India Office Records and Private Papers Languages: English Date Range: 19 Aug 1937-17 Dec 1947 Extent: 1 file
9. IOR/L/PS/12/4065 Reference (shelfmark): IOR/L/PS/12/4065 Title: Coll 33/13 Miscellaneous internal affairs Collection Area: India Office Records and Private Papers Languages: English Date Range: 18 Mar 1935-12 Nov 1941 Extent: 1 file
10. IOR/L/PS/12/4076 Reference (shelfmark): IOR/L/PS/12/4076 Title: Coll 33/20 Relations with Germany Collection Area: India Office Records and Private Papers Languages: English Date Range: 26 Aug 1936-6 Jun 1940 Extent: 1 file