National Museum of Nuclear Science & History
Rayburn worked at the 100-D area at Hanford during the Manhattan Project.
Harry Petcher's flat feet meant he couldn't be drafted, but still had an obligation to work for the war effort.
Charles Swenson worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
M. P. Lafleur worked for the Tennessee Eastman Corporation at the Y-12 Plant.