National Museum of Nuclear Science & History
Melvin Bengston was a security guard at the Metallurgical Laboratory in Chicago during the Manhattan Project.
I. S. White worked for the United States Engineer District Office.
Opaline Calhoun was a laboratory technician at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Gilbert S. Frese served in the 320th Troop Carrier Squadron.