From financially disastrous beginnings - no one seemed particularly keen to invest in tube railways - the District Line now serves 60 stations and is one of the busiest in the London Underground network. This book is one of the Illustrated Histories of the London Underground, published in association with London's Transport Museum and London Underground. The series traces the development of each Tube line from its initial planning and construction to its present day operation.
Good, but somewhat mechanical in its description of the historical progress. Gives great depth of the District line, though moreso in its physical aspects than any driving motivations.