Columbia subject headings:
Harvard subject headings:
Great Britain. Royal Air Force
Great Britain. Royal Air Force--Pictorial works.
World War, 1939-1945--Aerial operations, British--Pictorial works.
World War, 1939-1945--Aerial operations, British.
Princeton subject headings:
Great Britain. Royal Air Force
Great Britain. Royal Air Force--Pictorial works.
World War, 1939-1945--Aerial operations, British--Pictorial works.
World War, 1939-1945--Aerial operations, British.