National Museum of Nuclear Science & History
Swanson worked at the 300 Area at Hanford during the Manhattan Project.
Robert Helton worked for the Tennessee Eastman Corporation at the Y-12 Plant.
Arthur M. Ross was born in Revere, MA. He attended the Massachusetts Institute of Technology. During the Manhattan Project, he served in the Special Engineer Detachment at Oak Ridge, TN at the X-10 Graphite Reactor.