Records of the Royal Air ForceAIR 281913-1996Air Ministry and Ministry of Defence: Operations Record Books, Royal Air Force Stations
This series consists of Operation Record Books (form 540) and appendices (form 541) for RAF Stations. Also included are some Operation Record Books for RAF Stations which, although under British command, were used by Dominion and allied air force units.
Though the system of Operation Record Books started after the First World War, few books in this series date from before the mid-1930s.