National Museum of Nuclear Science & History
Attended the California Institute of Technology.
Daniel D. Friel was a chemical engineer for the DuPont Company who joined the Manhattan Project at the University of Chicago in 1943.
Walker worked at the 100-F Area at Hanford during the Manhattan Project.
Wilber A. Stevens was an army officer in charge of overseeing construction at Los Alamos. He helped choose the site where the Manhattan Project would test its first atomic bomb.
J. O'Conner worked for the Midwest Piping and Supply Company.