National Museum of Nuclear Science & History
Celia Ryan was a staff worker at Los Alamos during the Manhattan Project.
Rolf Peterson was a physicist at Los Alamos from 1943 through the end of the war. Peterson graduated from St.
Sidney Major, Jr. worked for the United States Engineer District Office.
Anna Barbic was a laboratory assistant in the the Chemistry Division at the Metallurgical Laboratory in Chicago during the Manhattan Project.
