National Museum of Nuclear Science & History
R. A. Coster worked for the Union Carbide & Carbon Corporation.
Jose A. Valdez was a staff worker at Los Alamos during the Manhattan Project.
Mumford worked in the 200 East Area at Hanford during the Manhattan Project.
Harris Harold Levee served in the Special Engineering Detachment at the Metallurgical Laboratory at the University of Chicago on the Manhattan Project.