Handmade calendar made by 16 year old Rachel “Chelly” de Groot for her 14 year old brother Louis while they were in hiding in separate places in the Netherlands in 1944. Chelly copied an image of the Alkmaar Cheese Market, depicting two men carrying cheese in front of the Alkmaar Weigh House. Louis received the calendar after Dirk Onderweegs, the resistance member Louis was staying with, visited his family in February 1944. The calendar displays June 1944 because Louis and the Onderweegs had to flee their home in June, after they were turned into the Gestapo for their resistance activity. Germany occupied the Netherlands in May 1940 and implemented anti-Jewish restrictions. In July 1942, the Germans began mass deportations. On November 16, 1942, Chelly, 15, Louis, 13, and their parents Meijer and Sophia left Arnhem and went into hiding. Meijer and Sophia hid in Amsterdam while Chelly and Louis moved around to different locations. In summer/fall 1943, Chelly went to Amsterdam to live with her parents. In December, Louis was sent to Lemmer to live with the Onderweegs family. In February 1944, Dirk Onderweegs visited and offered to take Chelly to a safer hiding place. On April 8, 1944, four days before Dirk was to return, Chelly and her parents were denounced and arrested. They were sent to Westerbork transit camp, then to Auschwitz. Chelly and Sophia were killed upon arrival in Auschwitz on May 22, 1944. Meijer was selected for a work detail and was killed on September 30, 1944. Louis remained in hiding with Onderweegs until liberation in mid-April 1945.