National Museum of Nuclear Science & History
H. R. Chapman worked for the H. K. Ferguson Company.
Burris Cunningham was a research associate at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Andrew Kapral served in the 603rd Air Engineering Squadron.
Fredrika Lewis was a laboratory technician in the Health Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Robert Wells was a patent attorney at the Chicago Met Lab during the Manhattan Project.