National Museum of Nuclear Science & History
N. C. Parrish worked for the United States Engineer District Office.
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.
Raymond Elliot Zirkle was a radiobiologist who worked at numerous Manhattan Project sites during World War II.
T. R. Disbrow worked for the Roane-Anderson Company.