National Museum of Nuclear Science & History
Pechar worked in the 300 Area at Hanford during the Manhattan Project.
Harry Stephon was a gruard and sergeant in the U.S. Army at the Metallurgical Laboratory in Chicago during the Manhattan Project.
Howard T. Parr served in the 603rd Air Engineering Squadron.
W. L. Brewer worked for the Tennessee Eastman Corporation at the Y-12 Plant.