National Museum of Nuclear Science & History
G. W. Richards Jr. served in the 509th Headquarters.
Stanislaw Ulam (1909-1984) was a Polish-American mathematician. Ulam was born in 1909 in Lvov, Austria-Hungary (present-day Ukraine).
Hall worked in the United States Engineer District Office.
Graf worked at the 300 Area at Hanford during the Manhattan Project.
Frank Watson worked for the Tennessee Eastman Corporation at the Y-12 Plant.