National Museum of Nuclear Science & History
Major John A. Derry was a top military assistant, mainly working in Washington D.C., during the Manhattan Project.
Carl Helrich (1895-1971) was a civil engineer for the J.A. Construction Company from 1943 to 1945 and helped construct the Oak Ridge town site and plant area.
Willard C. Cone was from Nashville, Tennessee. In 1943, he moved to Oak Ridge with his wife, Ruth Elizabeth Cone.
