Name
- Arabian American Oil Company, 1933-19881
- Department of State, United States, 1789-1
- Foreign Office, 1782-19681
- Foreign Office, Eastern Department, 1886-19681
- HM Ambassador to Saudi Arabia, 1930-1
- Holmes, Frank, geologist, 1874-19471
- Indian Political Service, External Affairs Department, 1937-19471
- Iraq Petroleum Company, 1912-1
- King of Saudi Arabia, 1932-1
- Petroleum Concessions Limited, 1935-1
- Petroleum Division, 1929-19701
- Political Agent, Bahrain, 1905-19711
- Political Resident, Persian Gulf, 1822-19711
- Qatar Petroleum Company, 1935-1976?1