National Museum of Nuclear Science & History
Frei worked for Stone and Webster Engineering Corporation.
G. Williams worked for the Comstock-Bryant Electric Company.
George T. Felbeck was a Manhattan Project veteran and engineer, who held the position of Manager of Operations at Oak Ridge for Union Carbide.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
W. F. Jensen served in the 390th Air Service Group.
