National Museum of Nuclear Science & History
Tracy worked for Stone and Webster Engineering Corporation.
Jack Aeby graduated Mound City (MO) High School in 1941. He went to the University of Nebraska, studying chemistry until the spring of 1943 when he received his draft notice.
Crawford worked in the United States Engineer District Office.
Technical Sergeant Roderick F. Arnold (1917-1998) was a Flight Engineer assigned to the Bockscar’s original crew.