Name
- AHQ, Iraq, 1941-19551
- Admiralty, 1708-19641
- Adviser to the Government of Bahrain, 1926-19574
- Air Ministry, 1918-19641
- Anglo-Iranian Oil Company Limited, 1909-19547
- Arabian American Oil Company, 1933-19881
- Bahrain Petroleum Company, 1929-4
- Bahrain Petroleum Company, Chief Local Representative, 1930-c 19711
- British Consul, Ahwaz, Early 20th century-Mid 20th century1
- Eastern and General Syndicate Limited, oil company, 1920-19394
- Emir of Kuwait, 1718-3
- Emir of Qatar, Mid 19th century-1
- Foreign Office, 1782-19683
- Geological Survey of India, 1851-1
- Government of India, 1834-19471
- Government of Persia, Qājār dynasty, 1794-19251
- HM Ambassador to Iran, 1807-19801
- Holmes, Frank, geologist, 1874-19471
- Imperial Airways, 1924-19391
- King of Bahrain, 1783-6