National Museum of Nuclear Science & History
Watkinds worked at the 300 Area at Hanford during the Manhattan Project.
Leo A. Ohlinger was a senior engineer at the University of Chicago Met Lab. Ohlinger was also Section Chief of P-IX, Engineering Physics.
Frank Smith worked in the shop at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Albert Rapp worked for the United States Engineer District Office.