National Museum of Nuclear Science & History
Frey worked in the United States Engineer District Office.
H. G. Singleton worked for the Roane-Anderson Company.
D. M. Jackson served in the 390th Air Service Group.
Walter E. Jordan worked on the Manhattan Project as an employee of DuPont on the physics staff. He worked at the University of Chicago and Hanford, WA.
Brown worked in the United States Engineer District Office.
