National Museum of Nuclear Science & History
John Riddle was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Dr. Lauren Donaldson (1903-1998) was an ichthyologist who was hired by the Manhattan Engineering District at Hanford to monitor effects of radioactive contamination in the Columbia River.
Joseph F. Gorman worked in mail and records for the Manhattan Engineer District, first in Syracuse, NY in 1936, then New York City.