National Museum of Nuclear Science & History
Beckwith worked in the United States Engineer District Office.
Bill Hartnett worked in plutonium metallurgy for the Manhattan Project at the Hanford Engineer Works from January 1943 to December 1946.
Mildred Summers was a chemical technician at the Metallurgical Laboratory in Chicago during the Manhattan Project.
M. E. Ober worked for the J.A. Jones Construction Company.