National Museum of Nuclear Science & History
Walter Johnson worked for the United States Engineer District Office.
Cook worked at the 100-D Area at Hanford during the Manhattan Project.
George W. Campbell was a research assistant at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
N. D. Barker worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Sieck worked at the 200 East Area at Hanford during the Manhattan Project.
