National Museum of Nuclear Science & History
Kittrell worked for Stone and Webster Engineering Corporation.
Louella Simmons was a procurement and property worker at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Roger Hildebrand is an American physicist and Manhattan Project veteran. He is the S.K. Allison Distinguished Service Professor, Emeritus, at the University of Chicago and is affiliated with the Enrico Fermi Institute.
Calvin S. Shepherd worked on the Manhattan Project at Los Alamos, NM and the Trinity Site.
James H. Alexander was a staff member at Los Alamos during the Manhattan Project.