National Museum of Nuclear Science & History
Thelma Clark worked for the Roane-Anderson Company.
Roger Sr was a mechanical engineer having graduated from Stanford University during World War II. He and his wife, Katherine Barnes were recruited by the FBI who made contact with them at the Santa Fe training station when they were leaving town, after their honeymoon at Ghost Ranch.
R. D. Campbell worked for the Tennessee Eastman Corporation at the Y-12 Plant.
