The collection includes geographical and diagrammatic maps covering all modes of transport in London from the 1860s to the present day. Early maps were produced by private companies such as the Metropolitan Railway, District Railway, Central London Railway and London General Omnibus Company. From 1933 public transport maps were produced by a single authority, London Transport, and include Henry Beck’s iconic 1933 Tube map. Transport for London took over in 2000. All maps, including the Tube map, continue to develop and change to aid navigation around London.