National Museum of Nuclear Science & History
Clingerman worked at the 200 West Area at Hanford during the Manhattan Project.
Winkelman worked for Stone and Webster Engineering Corporation.
Howard Parsons was an American physicist. Parsons was born in Chicago in 1920. He receieved a B.S. from the University of Chicago, and shortly afterwards was hired to work on the Manhattan Project as a research assistant at the Chicago Met Lab.