National Museum of Nuclear Science & History
Greenwalt worked at the 300 Area at Hanford during the Manhattan Project.
Leonard Orr served in the 1395th Military Police Company, Aviation.
Peter Watkins was a member of the Special Engineer Detatchment (SED) at Los Alamos during the Manhattan Project.
Hilda Uchiyamada was a research assistant at the Metallurgical Laboratory in Chicago during the Manhattan Project.