Einstein's letter to FDR about the possibility of fission bombs mentions the work of this Italian-born physicist
... 
Another refugee physicist, German-born Albert Einstein, also signed the letter, 
which ... Manhattan Project scientists working at the University of Chicago under 
the... [DOC] [TLE] Manhattan Project - New World Encyclopedia [PAR] Born out of a small research program in 1939, the Manhattan Project eventually 
... role in persuading Albert Einstein to write a letter to President Roosevelt urging 
the ... Main articles: History of physics, History of nuclear weapons, World War II.