Name
- IOR/L/PS/18/B4041
- IOR/L/PS/20/C301
- IOR/R/15/1/1471
- IOR/R/15/1/1491
- IOR/R/15/1/1541
- IOR/R/15/1/1651
- IOR/R/15/1/1741
- Ikhwan, military and religious brotherhood, 1912-19301
- Imam of Yemen, 897-19621
- Imperial Airways, 1924-19391
- India Office, Assistant Under-Secretary of State for India, 1858-19471
- India Office, Information Department, 1921-19491
- India Office, Military Secretary, 1809-19471
- India Office, Registrar and Superintendent of Records, Mid 19th century-Mid 20th century1
- India Office, War Staff, 1939-19491
- India Store Department, Mid 19th century-Mid 20th century1
- Indian Agricultural Research Institute, 1905-1
- Indian Army, Adjutant General, 1895-19471
- Indian Army, Western Command, Quetta, c 1930-19381
- Indian Medical Service, 1896-19471