Numerous foreign government and military resources are available for conducting aviation history research. Examples include:
Australia
Royal Australian Air Force Museum
Royal Australian Air Force Air Power Development Centre
National Museum Australia
Canada
Canadian War Museum
National Air Force Museum of Canada
Royal Canadian Air Force
Royal Canadian Air Force Journal
France
Germany
Deutsches Museum Aviation & Space Center
United Kingdom
Imperial War Museum
National Archives Cabinet Papers 1915-1988
Parliament (House of Commons Debates) 1803-2005
Royal Air Force Centre for Air Power Studies See their journal Air Power Review