National Museum of Nuclear Science & History
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.
John L. Lundgren served in the 393rd Bombardment Squadron.
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.