The material consists of the following notes for talks and broadcasts by Edward Appleton: 'How radiolocation works', a draft and script of a radio broadcast, dated August 1945; 'Recent radio progress', a 2 page talk on radiolocation, no date; a 2 page untitled talk on wartime advances in science, 1945; and 'British Science in war and peace', a draft, perhaps for broadcast, c. 1945.