Columbia subject headings:
United States. Army Air Forces. Air Transport Command.
United States. Naval Air Transport Service.
World War, 1939-1945--Transportation.
Harvard subject headings:
United States. Army Air Forces. Air Transport Command
United States. Naval Air Transport Service.
World War, 1939-1945--Transportation.
Princeton subject headings:
United States. Army Air Forces. Air Transport Command
United States. Naval Air Transport Service
World War, 1939-1945--Transportation.