Mark Ovenden (born 20 June 1963, London, UK) is an author who specialises in the subject of graphic design, cartography and architecture in public transport, with an emphasis on the underground railway. "See also Mark Ovenden (sportscaster)". His first book Metro Maps of the World is a comprehensive guide to the diagrams, plans and maps of every Subway, U-bahn, Underground and Metro system. Wikipedia
The definitive Wikipedia entry for Mark Ovenden. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Mark_Ovenden
