Collection of letters by codebreaker Alan Turing found in filing cabinet

The correspondence, dating from 1949 to 1954, was found by an academic in a storeroom at the University of Manchester

A lost collection of nearly 150 letters from the codebreaker Alan Turing has been uncovered in an old filing cabinet at the University of Manchester.

The correspondence, which has not seen the light of day for at least 30 years, contains very little about Turing's tortured personal life. It does, however, give an intriguing insight into his views on America.