Electric Railways 1880-1990 explores the history of the integration of both electric and diesel-electric railway systems and identifies the crucial role that diesel-electric traction played in the development of wireless electrification. The evolution of electrical technology and the modern railway produced innovations in engineering that were integral to the development of traction, power and signalling systems. This book presents a thorough survey of electric railway development from the earliest days pf the London Underground to modern electrified main line trains. The distinction between 'enforced electrification' and 'economic electrification' is also discussed and the pioneering role of J.J. Heilmann assessed.