National Museum of Nuclear Science & History
Jay Wechsler enlisted in the Army in 1943 and spent several months at Oak Ridge working as an Army construction engineer, In the winter of 1943, he was suddenly transferred to Los Alamos, where he began working directly with Otto Frisch.
Rolland Perry was a staff worker at Los Alamos during the Manhattan Project.
G. C. Kreis worked for the J.A. Jones Construction Company.
