National Museum of Nuclear Science & History
Fredric Stokes was a staff worker at Los Alamos during the Manhattan Project.
Robert Schrader was completing his PhD in chemical engineering at MIT when he was selected to work on the Manhattan Project in Boston.
H. M. Bryant worked for the Comstock-Bryant Electric Company.
John Klein was a member of the Special Engineering Detachment. He worked at the Metallurgical Lab at the University of Chicago and at Los Alamos.