Division within FO1756-1966General Correspondence from Political and Other Departments
Before 1906 the general correspondence of all the departments of the Foreign Office, except the Chief Clerk's Department, the Library, and until 1892, the Slave Trade and African Departments is arranged in a series of country series.
From 1906 to 1966, correspondence of the Political Departments, FO 371; Supplementary correspondence, FO 97.
Registers of correspondence and indexes: for 1761 to 1893 FO 605; Registers for 1891 to 1905 FO 566, indexed in FO 804; Registers for 1906 to 1920 FO 566 and FO 662, indexed in FO 409.