BBC "Third Programme" Talk <p>Typescript of Penrose's talk and discussion with Sir Cyril Burt on the BBC's "Third Programme", entitled "Three problems: 3. Intelligence" on Saturday 11 Sep 1948. Labelled to show that the copy had not been checked against the "as broadcast" script.</p> <p>Also contains correspondence between Penrose, the Talks Department of the BBC and Sir Cyril Burt, and a typescript of Penrose's BBC talk "The Influence of Heredity on Health and Disease", dated September 1948.</p> 1948