National Museum of Nuclear Science & History
Fred Saak served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Ole G. Landsverk was a member of the health physics team at the University of Chicago Metallurgical Laboratory during the Manhattan Project.
J. C. Freer worked for the Roane-Anderson Company.
William E. Caldes studied chemical engineering at Princeton University. In 1943, he was recruited to join the Manhattan Project, and became the 19th project member at Los Alamos.