National Museum of Nuclear Science & History
A. M. Hartman worked for the Roane-Anderson Company.
Charles Helmers worked for the J.A. Jones Construction Company.
Mollie Sprio was a stenographer at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Joseph W. Kennedy (1916-1957) was an American chemist. In 1940 he co-discovered plutonium with Glenn Seaborg, Edwin McMillan, and Arthur Wahl.
