National Museum of Nuclear Science & History
Ethal Moonan was a staff worker at Los Alamos during the Manhattan Project.
A. T. Helgerson worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Wilam Spangler was a staff worker at Los Alamos during the Manhattan Project.
Arnold graduated from Northwestern University in 1941 with a B.S. degree in Biology and a minor in Chemistry.
