Ten major events or developments of 1941 are depicted on this first of five sheets that commemorate the 50th anniversary of World War II. Each sheet is a mini-course in the events that took place throughout the war years. In the center of this first sheet is a map of the world, showing the countries at war in 1941 and pinpointing locations of major events and conflicts that year. Each of the 10 attached stamps deals with a specific subject - such as the Burma Road, a supply route for Chinese war materials, and the Japanese bombing of Pearl Harbor.