Interesting KDF Sea Voyage Daily Schedule Card Set-This set of cards (missing one day) is for a voyage at sea on one of the KDF ships, dated Wednesday, May 24, 1939 through Monday, May 29, 1939. The one day that is missing is Friday. Each measures 7 ½” by 5”. Each features extremely colorful imagery as you can see. Each also contains a daily schedule of events on the reverse. The Kraft durch Freude (KdF) or, officially, NS Gemeinschaft Kraft durch Freude (German for 'Strength Through Joy'; KdF) was a German NSDAP-operated leisure organization in Nazi Germany. It was part of the German Labour Front (German: Deutsche Arbeitsfront), the national labour organization at that time. Set up in November 1933 as a tool to promote the advantages of Nazism to the German people and internationally, it was also used to ease the process of the rearmament of Germany. Through its structure of organized events and promotion of propaganda, it was also intended to prevent dissident and anti-state behavior. By 1939, it became the world's largest tourism operator. This is a scarce set to find!