Collection name: Audio-Visual Collection; Subjects: Oral History; Speeches & Events: Collection contains audio recordings of Royal Institution lectures from 1940-1980's on a variety of topics. These recordings are on a variety of media including wax cylinders, reel to reel tapes as well as cassette tapes and CD's. There are also a number of Shellac disc's containing lectures given for the BBC and foreign scientific talks through the 1930s-40s; items: 12 cylinder, 20 Shellac Disc, 490 Open Reel Tape, 300 Compact Cassette, 160 Audio CD-R,