National Museum of Nuclear Science & History
Tracy worked for Stone and Webster Engineering Corporation.
Frank Holden was a member of the Special Engineering Detachment at Los Alamos.
M. A. Mostyn worked for the Roane-Anderson Company.
Roscoe Charles Wilson was a United States Army Air Forces Officer. At the rank of Colonel he was the overall Project Office to the Manhattan Engineering District from June 1943 to December 1944.
