John P. Wittemore

Walter M. Longfelt

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

Arthur C. Stein

Arthur C. Stein served in the 320th Troop Carrier Squadron.

George E. Meyers

George Meyers was a glassblower at the SAM Laboratory at Columbia University. He was only a teenager, but had a talent for glass blowing by hand that was needed by Columbia's scientists.

Joseph J. Darmento