Einstein's letter to FDR about the possibility of fission bombs mentions the work of this Italian-born physicist
... Szilard photo and Einstein letter courtesy Argonne 
National Laboratory ... Sachs, who was an unofficial adviser to President Franklin 
Roosevelt, urged that Einstein should write directly to the... [DOC] [TLE] Albert Einstein's letters to President Franklin Delano Roosevelt  E ... [PAR] A warning to President Roosevelt on the possibility of constructing ... text of three 
additional letters that Einstein wrote to FDR with a small collection of ... of the 
possibility of constructing "extremely powerful bombs of a new type" with hints ... 
the Administration and the group of physicists working on chain reactions in 
America.