National Museum of Nuclear Science & History
Bailey worked for Stone and Webster Engineering Corporation.
Stanislaw Ulam (1909-1984) was a Polish-American mathematician. Ulam was born in 1909 in Lvov, Austria-Hungary (present-day Ukraine).
L. E. Johnston worked for the United States Engineer District Office.
E. F. Johnson worked for the Tennessee Eastman Corporation at the Y-12 Plant.