National Museum of Nuclear Science & History
J. R. Stark worked for the Tennessee Eastman Corporation at the Y-12 Plant.
M. A. Wallace worked for the Roane-Anderson Company.
Mary Fair worked as a lab assistant at the Metallurgical Lab at the University of Chicago. She was not sure of the purpose of her work, but often used radiation detecting devices in the experiments.
R. J. Rockstron worked for the United States Engineer District Office.