National Museum of Nuclear Science & History
Rudolph Vergath was a staff worker at Los Alamos during the Manhattan Project.
Frederic Showalter served in the First Ordnance Squadron.
Dunn worked in the United States Engineer District.
John M. Sprecher was a chemical engineer. During the Manhattan Project, he worked for DuPont in Wilmington, DE.
Margaret Rand was a research assistant in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
