National Museum of Nuclear Science & History
Parr worked in the 200 East and 100 D Areas at Hanford during the Manhattan Project.
Armstrong worked at the 200 West and 300 Areas at Hanford during the Manhattan Project.
Charles Crichfield worked as an elctrician in Oak Ridge, Tennessee from 1943 to September 1945. Crichfield's brother Paul and father P.
Attended Massachusetts Institute of Technology.