National Museum of Nuclear Science & History
Sidney Williams was a janitor at the University of Chicago’s Metallurgical Lab (“Met Lab”) during the Manhattan Project.
Percy Phillips served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
P. S. Vincent worked for Clinton Laboratories at the X-10 Reactor.
Dorothy C. Johnson was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.