National Museum of Nuclear Science & History
Winfield Sylvester was a staff worker at Los Alamos during the Manhattan Project.
D. R. Keyes worked for the A. S. Schulman Electric Company.
Beatrice Foreman was a laboratory technician in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
C. M. Nelson worked for Clinton Laboratories at the X-10 Reactor.