Joseph Warren Hays was a pilot in the Army Air Corps during WWII. He served from January 1943 through November 1945. Hays flew missions over Europe in 1945 as a co-pilot of a B-24 Liberator with the 446th Bombardment Group. After the war, he returned to TCU to complete his degree in Economics. The collection includes a complete set of letters written by Joseph Warren Hays to his family while serving in the Army Air Corps during World War II.