National Museum of Nuclear Science & History
Robert Plott was a research assistant at the Chicago Met Lab during the Manhattan Project.
Lewin worked in the 100 D Area at Hanford during the Manhattan Project.
Blake worked in the United States Engineer District Office.
William O’Brien worked for the United States Engineer District Office.
Joseph Kouba was a janitor at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.