21. IOR/L/MIL/7/13466 Reference (shelfmark): IOR/L/MIL/7/13466 Title: Collection 303/1 New scheme of Army signalling in India and appointment of two inspectors. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1886-1888 Extent: 1 file
22. IOR/L/MIL/7/13472 Reference (shelfmark): IOR/L/MIL/7/13472 Title: Collection 303/7 Military signallers of Indian Telegraph Department: service to count for promotion to sergeant and pension. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1900-1902 Extent: 1 file
23. IOR/L/MIL/7/13482 Reference (shelfmark): IOR/L/MIL/7/13482 Title: Collection 303/15 Ranks of officers commanding units of Royal Corps of Signals and changes in establishment of British personnel serving with Indian Signal Corps. Collection Area: India Office Records and Private Papers Languages: English Date Range: 1930-1941 Extent: 1 file