National Museum of Nuclear Science & History
Charles Schallis (1898-1965) was a staff worker at Los Alamos during the Manahttan Project.
Jack Holmes worked for the United States Engineer District Office.
Alfred Pfanstiehl was a junior physicist at the Chicago Met Lab during the Manhattan Project. Pfanstiehl was a signatory of the Szilard Petition, an attempt to avert military use of the atomic bomb against Japan.
