11. IOR/R/1/1/1288-1294 Reference (shelfmark): IOR/R/1/1/1288-1294 Title: Internal Branch Section C, Confidential 'B' Proceedings Collection Area: India Office Records and Private Papers Languages: English Date Range: 1905-1921 Extent: 7 files
12. IOR/R/1/1/1295-1441 Reference (shelfmark): IOR/R/1/1/1295-1441 Title: Internal and Political Branch Files - first cycle Collection Area: India Office Records and Private Papers Languages: English Date Range: 1922-1923 Extent: 185 files
13. IOR/R/1/1/1442-1707 Reference (shelfmark): IOR/R/1/1/1442-1707 Title: Political Branch Files - second cycle Collection Area: India Office Records and Private Papers Languages: English Date Range: 1924-1927 Extent: 383 files
14. IOR/R/1/1/1708-4629 Reference (shelfmark): IOR/R/1/1/1708-4629 Title: Political Branch Files - annual cycles Collection Area: India Office Records and Private Papers Languages: English Date Range: 1928-1947 Extent: 3086 files
15. IOR/R/1/1/4584-4933 Reference (shelfmark): IOR/R/1/1/4584-4933 Title: Miscellaneous papers in the Internal Branch, Political Branch, Reforms Branch and related branches Collection Area: India Office Records and Private Papers Languages: English Date Range: 1917-1947 Extent: 106 files
16. IOR/R/1/1/4630-4632 Reference (shelfmark): IOR/R/1/1/4630-4632 Title: Internal Branch Files - second cycle Collection Area: India Office Records and Private Papers Languages: English Date Range: 1924-1927 Extent: 3 files
17. IOR/R/1/1/4633-4670 Reference (shelfmark): IOR/R/1/1/4633-4670 Title: Internal Branch Files - annual cycles Collection Area: India Office Records and Private Papers Languages: English Date Range: 1928-1934 Extent: 46 files
18. IOR/R/1/1/4671-4694 Reference (shelfmark): IOR/R/1/1/4671-4694 Title: Reforms Branch Files - annual cycles Collection Area: India Office Records and Private Papers Languages: English Date Range: 1928-1934 Extent: 32 files
19. IOR/R/1/1/4695-4773 Reference (shelfmark): IOR/R/1/1/4695-4773 Title: Internal A Branch Files - annual cycles Collection Area: India Office Records and Private Papers Languages: English Date Range: 1935-1946 Extent: 88 files
20. IOR/R/1/1/4774-4819 Reference (shelfmark): IOR/R/1/1/4774-4819 Title: Internal B Branch Files - annual cycles Collection Area: India Office Records and Private Papers Languages: English Date Range: 1934-1944 Extent: 52 files