Records of the Air Historical BranchAIR 51914-1959Air Ministry: Air Historical Branch: Papers (Series II)
Records in this series form a continuation of the records in the AIR 1 series and consist mainly of files, folders and volumes opened between 1921 and 1930.
Included in this series are a large number of important papers collected for use in the official history of the department and which otherwise would have been in AIR 2, but which were kept separate by the Historical Branch of the Air Ministry and were placed in this series.