National Museum of Nuclear Science & History
W. F. Johnson worked for the J.A. Jones Construction Company.
W. C. Keettel worked for the United States Engineer District Office.
Margaret Brown was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Joseph I. Gulick served as a technical sergeant in the 393rd Bombardment Squadron. He was a member of the ground crew regularly assigned to the B-29 Up An’ Atom.
Seymour Ratner was a staff worker at Los Alamos during the Manhattan Project.
