National Museum of Nuclear Science & History
McGruder worked for Stone and Webster Engineering Corporation.
Julia Elaine Freeman graduated high school early at age 16. She was also the only African American woman in her high school graduating class of 1940.
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.