Lost Alan Turing letters found in university filing cabinet

A huge batch of letters penned by visionary British cryptographer Alan Turning has been found at the University of Manchester. Professor Jim Miles was tidying a storeroom when he discovered the correspondence in an old filing cabinet. At first he assumed the orange folder, which had Turing's name on the front, had simply been re-used by another member of staff. But a closer look revealed 148 documents, including a letter sent by GCHQ, a draft version of a BBC radio programme about artificial intelligence, and invitations to lecture at some top universities in America. Turing worked at the University of Manchester from 1948, first as a Reader in the mathematics department and later as the Deputy Director of the Computing Laboratory.