National Museum of Nuclear Science & History
R. M. Smith worked for the United States Engineer District Office.
W. H. Williams worked for the Union Carbide & Carbon Corporation.
Lawrence Litz was a young physicist when he began working on radioactivity at the Metallurgical Laboratory at the University of Chicago.
Ella Tyree was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
