National Museum of Nuclear Science & History
Wilcox P. Overbeck was a research associate and instrumentation designer at the Chicago Met Lab. He was responsible for calling out the neutron count when Chicago Pile-1 went critical on December 2, 1942.
Margaret Wills worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Joe L. Clark served in the 1st Ordnance Squadron.
John W. Calkin graduated from Columbia University in 1933. He then earned a Ph.D. in mathematics from Harvard.