National Museum of Nuclear Science & History
Raymond Ledford worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Celia Szapka Klemski was working as a secretary for the State Department in Washington, DC when she was transferred to Manhattan to work on the Manhattan Project in 1942.
T. F. Hanley, Jr. worked for Hanley & Company.
R. F. Perkins worked for the Union Carbide & Carbon Corporation.