Columbia subject headings:
Harvard subject headings:
Operation Overlord--Congresses.
World War, 1939-1945--Aerial operations--Congresses.
World War, 1939-1945--Campaigns--France--Normandy--Congresses.
Princeton subject headings:
Normandy (France)
Normandy (France)--History, Military--Congresses.
Operation Overlord--Congresses.
World War, 1939-1945--Aerial operations.
World War, 1939-1945--Campaigns--France--Normandy--Congresses.