National Museum of Nuclear Science & History
Clarence Grover Sproul worked as a machinist on the Manhattan Project in Los Alamos, NM from January through June 1945.
Osterloh worked in the 100 F Area at Hanford during the Manhattan Project.
Paul Langguth worked for the United States Engineer District Office.
Etta Woodward was a project worker at Los Alamos during the Manhattan Project.