National Museum of Nuclear Science & History
Lorraine Rehpohl was a staff worker at Los Alamos during the Manhattan Project.
Dr. Joseph Katz was a chemist at Argonne National Laboratory at the Metallurgical Lab in Chicago. Katz was a part of a team that studied ways to make the diffusion of U-235 to U-238.
Richard Shepard joined the Manhattan Project at Oak Ridge, working in the K-25 Plant as a member of the Special Engineer Detachment.
P. W. Rueff worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Helgeson worked at the 300 Area at Hanford during the Manhattan Project.