National Museum of Nuclear Science & History
Harris Small was stationed in Oak Ridge, Tennessee, in the Special Engineer Department (SED). He served as a supervising civilian operator of shifts (the Calutron girls) at the Y-12 Electromagnetic Separation Plant.
F. L. Casey worked for the J.A. Jones Construction Company.
Coogler worked at the Oak Ridge project site during the Manhattan Project as a member of the U.S. Army Corps of Engineers.
Herbert Silverstone was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.