National Museum of Nuclear Science & History
J. A. Copeland worked for the Poe Piping & Heating Company.
Hughs worked at the 200 West Area at Hanford during the Manhattan Project.
Cunningham worked in the United States Engineer District Office.
Manuel Schwartz was a physicist. He worked at Los Alamos as a civilian employee from about July 6, 1944, until January or February 1946.