W.H. Johnston

R. R. Brown

Brown worked in the United States Engineer District Office.

Robert E. Armstrong

Robert E. Armstrong was a staff member at Los Alamos during the Manhattan Project.

M. B. Campbell

Clarence F. Hiskey

Clarence Francis Hiskey (1912-1998) was an American chemist and Soviet spy. He worked at Columbia University and the University of Chicago’s Metallurgical Laboratory during the Manhattan Project.