National Museum of Nuclear Science & History
Livingstone worked for Stone and Webster Engineering Corporation.
Julian Mack was an American physicist. Mack was the leader of Group G-11 (Optics), the photography group, in the Weapons Physics Division at Los Alamos during the Manhattan Project.
Floyd E. Ross served in the radar section of the 393rd Bombardment Squadron.
Frances I. Armstead was a staff member at Los Alamos during the Manhattan Project.