National Museum of Nuclear Science & History
J. D. McPherson worked for the United States Engineer District Office.
William Cowart was a design engineer with the Special Engineering Detachment for the Manhattan Project at Los Alamos, New Mexico.
Theodore “Ted” Hall (1925-1999) was an American physicist and an atomic spy who passed along detailed information about the implosion-type “Fat Man” bomb and several processes for purifying plutonium to the Soviet Union.
