1. IOR/L/MIL/7/13466-13487 Reference (shelfmark): IOR/L/MIL/7/13466-13487 Title: Collection 303 Army Signalling in India Collection Area: India Office Records and Private Papers Languages: English Date Range: 1886-1938 Extent: 22 files
2. IOR/L/MIL/7/13471 Reference (shelfmark): IOR/L/MIL/7/13471 Title: Collection 303/6 Miscellaneous questions. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1890-1899 Extent: 1 file
3. IOR/L/MIL/7/13483 Reference (shelfmark): IOR/L/MIL/7/13483 Title: Collection 303/16 Indian Army Signal Service. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1931 Extent: 1 file
4. IOR/L/MIL/7/13476 Reference (shelfmark): IOR/L/MIL/7/13476 Title: Collection 303/11 Provision of signal personnel for India. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1921-1923 Extent: 1 file
5. IOR/L/MIL/7/13485 Reference (shelfmark): IOR/L/MIL/7/13485 Title: Collection 303/18 Abolition of "T" company, Indian Signal Corps. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1932-1934 Extent: 1 file
6. IOR/L/MIL/7/13473 Reference (shelfmark): IOR/L/MIL/7/13473 Title: Collection 303/8 Formation of Signals Corps in India Collection Area: India Office Records and Private Papers Languages: English Date Range: 1920-1923 Extent: 1 file
7. IOR/L/MIL/7/13477 Reference (shelfmark): IOR/L/MIL/7/13477 Title: Collection 303/12 Part 1 Reorganisation of Indian Signal Service. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1921-1938 Extent: 1 file
8. IOR/L/MIL/7/13478 Reference (shelfmark): IOR/L/MIL/7/13478 Title: Collection 303/12 Part 2 Reorganisation of Indian Signal Service. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1925-1936 Extent: 1 file
9. IOR/L/MIL/7/13479 Reference (shelfmark): IOR/L/MIL/7/13479 Title: Collection 303/12 Part 3 Reorganisation of Indian Signal Service. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1927-1933 Extent: 1 file
10. IOR/L/MIL/7/13481 Reference (shelfmark): IOR/L/MIL/7/13481 Title: Collection 303/14 Appointment of quartermasters for service with signal units in India. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1926-1934 Extent: 1 file