National Museum of Nuclear Science & History
Harris worked for Stone and Webster Engineering Corporation.
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.
Okey B. Ellison was a security guard at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Mary Littleton worked for the J.A. Jones Construction Company.
Thelma Buckner worked for the H. K. Ferguson Company.