National Museum of Nuclear Science & History
J. D. McPherson worked for the United States Engineer District Office.
John M. Campbell served in the 393rd Bombardmen Squadron.
T. H. Allbright worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Ben Benjamin was a sergeant in the Special Engineer Detachment during the Manhattan Project. He had previously worked in industry making lenses and prisms, and was assigned to the Optics Group to help with photographing the Trinity Test.
