National Museum of Nuclear Science & History
Richard Recker served in the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
H. W. Caldwell worked for the Edenfield Electric Company.
Robert H. Maas served in the 603rd Air Engineering Squadron.
Marjorie Richmond was a laboratory technician in the Health Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
