National Museum of Nuclear Science & History
H. J. Mack worked for the Edenfield Electric Company.
Margaret Brown was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
W. K. Black worked for the Roane-Anderson Company.
Piper worked for Stone and Webster Engineering Corporation.
L. G. Ahrens worked in the 100-B Area at Hanford during the Manhattan Project.