National Museum of Nuclear Science & History
J. P. Smith worked for the J.A. Jones Construction Company.
Dr. Karl Larsen worked at Massachusetts Institute of Technology during the Manahattan Project. While there, he conducted heavy-water research by spectrum analysis, which was one of the prerequisites to the early atomic bombs.
Margaret J. Nickson was a medical doctor in the Biology Division at the University of Chicago Met Lab.
Dorothy Schafer was a staff worker at Los Alamos during the Manhattan Project.