BVWS Bulletin Volume 14 Supplement (December 1989)
|An history of and sets manufactured by one of the major wireless manufacturers of the 1920s.|
|7||A Review of Early Television in the U.K.
|Television developments from mechanical through to electronic designs.|
|12||The Valve: Industrial Aspects Before 1925.
|Early valves primarily intended for industrial use, including high power transmitting valves.|
|18||deForest: Inventor of the Triode.
|Lee deForest and the development of the Audion valve.|