National Museum of Nuclear Science & History
Marie Sperling was a staff worker at Los Alamos during the Manhattan Project.
E. D. Hughes worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Martin Warren was a staff worker at Los Alamos during the Manhattan Project.
H. T. Wensel worked for the United States Engineer District Office.
H. A. Maynier worked for the United States Engineer District Office.