Baedeker Blitz for the German Foreign Office, is reported to have said on 24 April 1942, "We shall go out and bomb every building in Britain marked with three stars in the Baedeker Guide", a reference to the popular travel guides of that name. Goebbels was furious; keen to brand British attacks as "terror bombing", he was equally keen to designate German efforts as "retaliatory measures". Stumm's off-the-cuff remark "effectively admitted the Germans were targetting cultural and historic targets, just what the German leadership did not want to do, and Goebbels took steps to make sure it did not happen again". The
Karl Baedeker something new (Baedeker emulated the style of English guide books published by John Murray), the inclusion of detailed information on routes, travel and accommodation was an innovation. Baedeker was always generous in acknowledging the part John Murray III had played in nurturing his outlook on the future development of his guides. As a bookseller in Koblenz, he had often seen tourists enter his bookshop, either carrying a red Murray guide or looking for one. At the time, John Murray III was the leader in the field, but Baedeker was about to change that. He is often referred to as the