National Museum of Nuclear Science & History
Alvin Vanvessem was a member of the Special Enginner Detatchment (SED) at Los Alamos during the Manhattan Project.
Elizabeth Howlett was a stenographer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Helena Calloway was a laboratory assistant in the Chemistry Division of the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
J. A. Duane Muncy was a staff worker at Los Alamos during the Manhattan Project. He was married to fellow project worker Bernice I.
