National Museum of Nuclear Science & History
Hillard Staley worked for the Roane-Anderson Company.
Myrtle E. Karcher was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
R. O. worked for Clinton Laboratories at the X-10 Reactor.
Roland Davis was a laboratory assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab) during the Manhattan Project.