National Museum of Nuclear Science & History
Elton H. Turk was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Earl Rau served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Paul J. Esterline was an engineer. He attended Ohio State University for two years, and then attended the Chicago Technical Institute in the late 1920s, learned engineering drafting there.