National Museum of Nuclear Science & History
M. E. Brennan worked for the Watson-Flagg Engineering Company.
Annie Lee Patterson was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
N. C. Poe, Jr. worked for the Poe Piping & Heating Company.
J. A. King worked for the Roane-Anderson Company.