J. A. Metcalf

Albert Ludwig

Carl H. Betz

Betz worked at Los Alamos during the Manhattan Project. 

Milton C. Sprouse

Milton C. Sprouse served in the 393rd Bombardment Squadron.

Walter M. Longfelt

Walter M. Longfelt was a laborer at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.