1. IOR/R/1/1 Reference (shelfmark): IOR/R/1/1 Title: Internal branch proceedings, files and papers Collection Area: India Office Records and Private Papers Languages: English Date Range: 1861-1947 Extent: 5320 files
2. IOR/R/1/1/1-682 Reference (shelfmark): IOR/R/1/1/1-682 Title: Internal Branch Secret Proceedings Collection Area: India Office Records and Private Papers Languages: English Date Range: 1861-1922 Extent: 684 files
3. IOR/R/1/1/879-957 Reference (shelfmark): IOR/R/1/1/879-957 Title: Internal Branch Deposit Proceedings Collection Area: India Office Records and Private Papers Languages: English Date Range: 1910-1922 Extent: 79 files
4. IOR/R/1/1/958-966 Reference (shelfmark): IOR/R/1/1/958-966 Title: Reforms Branch Secret Proceedings Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1921 Extent: 9 files
5. IOR/R/1/1/683-819 Reference (shelfmark): IOR/R/1/1/683-819 Title: Internal Branch 'A' Proceedings Collection Area: India Office Records and Private Papers Languages: English Date Range: 1885-1915 Extent: 137 files
6. IOR/R/1/1/820-878 Reference (shelfmark): IOR/R/1/1/820-878 Title: Internal Branch 'B' Proceedings Collection Area: India Office Records and Private Papers Languages: English Date Range: 1883-1922 Extent: 59 files
7. 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
8. 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
9. 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
10. 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