National Museum of Nuclear Science & History
H. H. Hudson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
E. Prendergast worked for the United States Engineer District Office.
Copeland worked in the United States Engineer District Office.
Cornelius Ridner was a staff worker at Los Alamos during the Manhattan Project.
Elizabeth Campbell was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.