Rubble stretches across the foreground like a broken city exhaling — St. Paul's Cathedral rises defiantly through the smoke-scarred skyline of wartime London, its great dome intact above the wreckage of Paternoster Row. This sepia-toned photographic postcard, part of the "London Under Fire" series published by Photochrom Co. Ltd. of Royal Tunbridge Wells, captures one of the most iconic images of the Blitz: the cathedral miraculously spared while the publishing heart of the city burned around it. Passed by the Censor (stamped on the front), this card was produced for civilian morale, bearing Churchill's stirring rallying cry on the reverse: "Let us all strive without failing in faith or in duty." — The Prime Minister. The gutted shells of surrounding buildings, their window frames blown open to the sky, stand as silent witnesses to the night of 29 December 1940. An unposted example in outstanding condition, this is a primary-source artifact of Britain's darkest and most defiant hour.