National Museum of Nuclear Science & History
Lawrence Sperry worked for the United States Engineer District Office.
Stewart W. Williams served as a 1st lieutenant in the 393rd Bombardment Squadron of the 509th Composite Group.
Ed Helfenberger worked for the Roane-Anderson Company.
Irene Balawender was a stenographer in the Instrument Section at the Metallurgical Laboratory in Chicago during the Manhattan Project.
