National Museum of Nuclear Science & History
Barksdale worked for Stone and Webster Engineering Corporation.
Elinor Pulitzer Hempelmann (1922-2012) was a secretary at Los Alamos during the Manhattan Project and wife of Health Group Director Louis Hempelmann.
R. F. Perkins worked for the Union Carbide & Carbon Corporation.
Gifford worked at the 200 West Area at Hanford during the Manhattan Project.