National Museum of Nuclear Science & History
H. M. Metcalf worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Frank Holden was a member of the Special Engineering Detachment at Los Alamos.
Elizabeth Campbell was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
L. Krug worked in the Instrument Section at the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.
