is not unknown to find examples of tramways, listed in historic documents among operating systems, that did not in fact exist. It is also not uncommon to find picture postcards, dating from the late 19th and early 20th centuries, showing tramcars operating in towns where tramways did not exist. (Similar circumstances are likely to exist for other countries.) Certain examples are tabulated, primarily because they appear in well-known historic records and tabulations. It is believed to be very likely that the historic record does not include "all" public town tramways that ever existed. Town tramways that escaped notice by historians (and regulatory authorities) are thought to have been 1.) located away from Europe, and 2.) worked by some form of traction other than electricity (e.g. horse, steam). Likely countries include Brazil (because of geographic size and incomplete records related to tramways), Mexico (because of its large number of horse- and mule-worked tramways) and the US (because of geographic size and lack of centralized records related to tramways). It is believed to be unlikely, but possible, that the historic record does not include all electric town tramways that ever existed. See also List of interurbans List of largest tram and light rail transit systems ever List of largest currently operating tram and light rail transit systems List of tram and light rail transit systems Tram and light rail transit systems List of metro systems Rapid transit List of trolleybus systems Trolleybus Sources Books Accattatis, Antonio. 2007. "Linee tranviarie a Torino" (). Firenze: Phasar Edizioni. Arrivetz, Jean. 1956. "Les Tramways Français" (No ISBN). Lyon: Editions Omni-Presse. Bett, W. C., and J. C. Gillam. 1962. "Great British Tramway Networks (4th Edition)" (). London: Light Railway Transport League. Blower, James M., and Robert S. Korach. 1966. "The NOT&L Story" (CERA Bulletin 109) (No ISBN). Chicago: Central Electric Railfans' Association. Brimson, Samuel. 1983. "The Tramways of Australia" (). Sydney: Dreamweaver Books. Brinson, Carroll. 1977. "Jackson: A Special Kind of Place" (LCCN 77-081145) (No ISBN). Jackson, Mississippi: City of Jackson. Buckley, R. J. 1984. "Tramways and Light Railways of Switzerland and Austria" (). Milton Keynes, UK: Light Rail Transit Association. Canfield, Joseph M. (ed.) 1965. "Electric Railways of Northeastern Ohio" (CERA Bulletin 108) (No ISBN). Chicago: Central Electric Railfans' Association. Canfield, Joseph M. (ed.) 1968. "West Penn Traction" (CERA Bulletin 110) (No ISBN). Chicago: Central Electric Railfans' Association. Canfield, Joseph M. 1969. "Badger Traction" (CERA Bulletin