National Museum of Nuclear Science & History
George Graves was a technical advisor at Hanford, and so famous there that he inspired a poem: "We'd called up a tight design/ Hewn strictly to the longhairs' line.
Bob Emigh was in the Navy and worked with Deak Parsons on telemetry for the bombs. He was assigned as the science officer for the planned third bomb.
William McCord, Jr. worked for the United States Engineer District Office.