National Museum of Nuclear Science & History
G. M. Parrish worked for the Roane-Anderson Company.
David Nicodemus (1916-1999) was an American physicist. Nicodemus worked at Los Alamos during the Manhattan Project and witnessed the Trinity Test.
Watkins worked at the 100-B Area at Hanford during the Manhattan Project.
Ralph worked at the 300 Area at Hanford during the Manhattan Project.