National Museum of Nuclear Science & History
John Riddle was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
H. O. Ramey worked for the Tennessee Eastman Corporation at the Y-12 Plant.
P. S. Wilcox worked for the Tennessee Eastman Corporation at the Y-12 Plant.
R. M. Van Petten worked for the Kellex Corporation at the K-25 Plant.
H. W. Caldwell worked for the Edenfield Electric Company.