Marvin H. Arnold, Jr.

Nelen Supert

Nelen Supert was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.

Stanley Stewart

Stanley Stewart was the Contracting Officer at Los Alamos during the Manhattan Project. After the bombings of Hiroshima and Nagasaki, Stewart wrote, “The security restrictions on our part of the work [at Los Alamos] have been more rigid than than on any other portion of the entire Manhattan Project.

Frances Steele

H. G. Hoberg

H. G. Hoberg worked for the United States Engineer District Office.