You simply MUST read the book about Harry Beck,the designer of the London Underground Tube map. It is the seminal definitive book on intelligent, lateral thinking design (see how he incorporated the Victoria line as a perfectly straight line in his original approach, by just moving orginal tube lines slightly). The book ponders on Harry's frustration, until his death,(in the mid 70s) on how London Transport never officially acknowledged his copyright or contribution. A Grey Plaque (the Underground equivalent of London's Blue Plaques which show where famous people lived) was put up at Finchley Central Station around 1997, together with a replica of his orginal map. Too little, too late, and probably more as a result of LT's guilt over the affair.
I live next door to where Harry lived. I collect metro/tube railway maps from all over the world, aided by travelling friends and family. They nealry all follow his concept of form and feature the diagrammatic rather than geographic representation of the rail network.