National Museum of Nuclear Science & History
L. F. Preston worked for the United States Engineer District Office.
J. L. Kelso worked for the Roane-Anderson Company.
Thomas Guilfoyle was a member of the Military Police at the University of Chicago's Metallurgical Lab from 1943 to 1945.
J. D. Scalbon worked for the Tennessee Eastman Corporation at the Y-12 Plant.
