National Museum of Nuclear Science & History
George Schaeffer was a staff worker at Los Alamos during the Manhattan Project.
Chappell worked in the United States Engineer District Office.
William Crum was born on September 4, 1925, in Hancock County, IL. He was the seventh of eight siblings who grew up on a farm in Western Illinois near the Mississippi River.
H. B. Marcum worked for the Union Carbide & Carbon Corporation.
