National Museum of Nuclear Science & History
R. J. Guthrie worked for the Watson-Flagg Engineering 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.
George Farley worked for the Tennessee Eastman Corporation at the Y-12 Plant.
C. A. Lindenmeyer worked for the Midwest Piping and Supply Company.