National Museum of Nuclear Science & History
Rose Pingel was a staff worker at Los Alamos during the Manhattan Project.
Arnold Kramish was a physicist in the Manhattan Project and a member of the Special Engineering Detachment (SED) at Oak Ridge, Tennessee, the Philadelphia Navy Yard, and Los Alamos.
Thomas Sommerville worked for the Watson-Flagg Engineering Company.
John Walker served in the army at Los Alamos during the Manhattan Project.