National Museum of Nuclear Science & History
Chellis worked for Stone and Webster Engineering Corporation.
Dwight Young (1892-1975) was a professional photographer working at a box factory when he heard about an opening at the University of Chicago’s Metallurgical Laboratory.
H. L. Longcrier worked for the J.A. Jones Construction Company.
Gerritsen worked at the 300 Area at Hanford during the Manhattan Project.