National Museum of Nuclear Science & History
Olga Nelson was a staff worker at Los Alamos during the Manhattan Project.
Phelps worked in the 100 F Area at Hanford during the Manhattan Project.
James Sircom Allen (1911-1982) was a Canadian-American physicist who worked at the Massachusetts Institute of Technology and Los Alamos during the Manhattan Project.
J. L. Ledgerwood worked for the Tennessee Eastman Corporation at the Y-12 Plant.
