National Museum of Nuclear Science & History
George Jackson worked for the Ralph Rogers Company.
Schroeder worked at the 200 West Area at Hanford during the Manhattan Project.
Lester Orlan Keen worked as an engineering draftsman at Hanford during the Manhattan Project. His son, Jack Keen, was a young boy at the time.
Harold B. Nilling was a laboratory helper at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Caldwell worked at the 200 West Area at Hanford during the Manhattan Project.