Files of registered correspondence of the Air Ministry, including records which originated in the War Office, the Admiralty and the two Air Boards which preceded the Air Ministry.
The series comprises policy, case, committee and miscellaneous papers and reports over the whole range of British air administration and related topics.
With the unification of the Ministry of Defence in 1964, the Air Ministry became the Air Department of the Ministry of Defence, its registered files are generally to be found thereafter in DEFE 71, but there is some overlap with this series.
Records within this series are available to download as digital microfilm.