National Museum of Nuclear Science & History
Dick Kosh was an American physicist. He worked at the Los Alamos site during the war, arriving from the University of Wisconsin, Madison, and then stayed afterwards.
Waverly Smith was a research associate at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Edward C. Sullivan worked for the Tennessee Eastman Corporation at the Y-12 Plant. After the war, he worked on the first rockets for North American Aviation, later Rocketdyne.