National Museum of Nuclear Science & History
Harry S. Truman (1884-1972) was the 33rd President of the United States of America. Truman first learned of the Manhattan Project after the death of President Roosevelt in April of 1945, when he relinquished his role as Vice President and took the oath of office as the next president of the United States.
Karl Ziegler Morgan was an American health physicist who served as Director of Health Physics at Oak Ridge from 1944 to 1972.
James Collinsworth served in the 603rd Air Engineering Squadron.
Lawrence S. O’Rourke began working on the Manhattan Project at Columbia University after he was called up from the Army Reserves in 1943.
