National Museum of Nuclear Science & History
A. O. Groth worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Roger Hildebrand is an American physicist and Manhattan Project veteran. He is the S.K. Allison Distinguished Service Professor, Emeritus, at the University of Chicago and is affiliated with the Enrico Fermi Institute.
Leston Stark was a staff worker at Los Alamos during the Manhattan Project.