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.
Jack Pierard was a communications clerk in the Hanford Engineering Works from January 1944 through the end of the war.
Paul McKim worked for the United States Engineer District Office.
