National Museum of Nuclear Science & History
Robert Young worked for the Fercleve Corporation.
Celia Ryan was a staff worker at Los Alamos during the Manhattan Project.
W. L. Killibrew worked for the Roane-Anderson Company.
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.