National Museum of Nuclear Science & History
C. Perry worked for the Roane-Anderson Company.
Hirst worked at the 100-D Area at Hanford during the Manhattan Project.
Duane Sewell began working with the Manhattan Project in 1941. He was one of the first people to arrive at Oak Ridge and experienced first-hand some of the difficulties there with cyclotrons and isotope separation.
D. L. Donavan worked for the Roane-Anderson Company.