National Museum of Nuclear Science & History
Daniel Pfaff was a staff worker at Los Alamos during the Manhattan Project.
Wisner worked for Stone and Webster Engineering Corporation.
Marshall Holloway was an American physicist. He received his PhD in physics from Cornell University. In 1942, he directed a secret Manhattan Project assignment at Purdue University.
Henderson worked at the 100-D Area at Hanford during the Manhattan Project.
Harder worked at the 300 Area at Hanford during the Manhattan Project.