National Museum of Nuclear Science & History
Ellis Ryan was a staff worker at Los Alamos during the Manhattan Project.
Graham worked at the 300 Area at Hanford during the Manhattan Project.
Treadwell worked at the 100-B and 100-D Areas at Hanford during the Manhattan Project.
John A. Simpson Jr. (1916-2000) was a distinguished American nuclear physicist and astrophysicist. Simpson was born on November 3, 1916 in Portland, Oregon.
V. P. Gehrke served in the 509th Headquarters and Base Services Squadron.
