National Museum of Nuclear Science & History
Tommie Richardson was a staff worker at Los Alamos during the Manhattan Project.
R. Petyko worked for the Roane-Anderson Company.
Newcombe worked at the 200 East Area at Hanford during the Manhattan Project.
John Sommer worked for the Roane-Anderson Company.
Joseph (J.) Garrott Allen was a research associate in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.