'Ports are often bombed when convoys are in because somebody...', WWII poster, between 1939 and 1946 Creators: Central Office of Information, Unknown.
3-072-748 - Heritage Art/Heritage Images
'Ports are often bombed when convoys are in because somebody talked. Never mention arrivals, sailings, cargoes or destinations to anybody', World War II poster, between 1939 and 1946.