National Museum of Nuclear Science & History
Franklin MacGregor served as a second lieutenant in the 393rd Bombardment Squadron. He was regularly assigned to the B-29 Top Secret.
Bob Carter is an American physicist who worked on the Water Boiler Reactor at Los Alamos during the Manhattan Project.
H. O. Ramey worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Sanford McDonnell was a mechanical engineer with the Special Engineering Detachment at Los Alamos from April 1944 to April 1946.