R. O. Ashworth

Marie Sperling

Marie Sperling was a staff worker at Los Alamos during the Manhattan Project.

P. Humphreys

Sherman Fried

Sherman Fried was a chemist at the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.

H. M. Schenk

H. M. Schenk worked for the United States Engineer District Office.