Gerald Garratt spent most of his career, apart from wartime service, at the Science Museum, London, and for many years he was in charge of the Communications Collections. He had completed six of this book's seven chapters before his death in 1989, and subsequently his daughter Susan Garratt has edited and prepared the final chapter based on material Gerald had collected from Marconi.

• Chapter 1: IntroductionChapter 2: FaradayChapter 3: MaxwellChapter 4: HertzChapter 5: LodgeChapter 6: PopovChapter 7: Marconi

Gerald Garratt spent most of his career, apart from wartime service, at the Science Museum, London, and for many years he was in charge of the Communications Collections. He had completed six of this book's seven chapters before his death in 1989, and subsequently his daughter Susan Garratt has edited and prepared the final chapter based on material Gerald had collected from Marconi.

• Chapter 1: IntroductionChapter 2: FaradayChapter 3: MaxwellChapter 4: HertzChapter 5: LodgeChapter 6: PopovChapter 7: Marconi