National Museum of Nuclear Science & History
Eva Roberts was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Edward Walsh worked for the United States Engineer District Office.
Tom Mulcahey was a staff worker at Los Alamos during the Manhattan Project.
John von Neumann was a Hungarian-American mathematician, physicist, and polymath. A child prodigy, by the age of eight he was familiar with calculus and knew Ancient Greek.