PRINT
Allen, Terry: Encyclopedia of Model Railways. Octopus Books, London UK 1979
Carlson, Pierce: Toy Trains, A History.  Harper & Row, New York NY 1986
Color Treasury of Model Trains. Crescent, New York NY 1972
Corey & Ochoa: The Model Railroader's Catalogue. Fireside Simon Schuster, New York NY 1991
Ellis, Chris: Model Trains, Collector's Guide. Bison Books, London UK 1994
Foster, Michael: Hornby Dublo Trains, Hornby Companion Series, Vol. 3, New Cavendish Books, London, UK. 1980
Graebe, Chris and Julie: The Hornby 0 Gauge System, Hornby Companion Series, Vol. 5, New Cavendish Books, London, UK. 1984
Gurney, David-Paul: Collectible Model Trains. Flammarion, Paris, France 2002/3
Levy, Allen: A Century of Model Trains. Crescent, New York NY 1974
Marsh, Hugo: Christie's Toy Trains. Watson Guptill, New York NY 2002
McCrindell, Ron: The Collector's All Colour Guide to Toy Trains, Salamander Tiger, London UK 1989              
Riddle, Peter H: America's Standard Gauge Electric Trains. Antique Trader Books, Norfolk VA 1998
Shiphorst, Paul Klein: The Golden Years of Tin Toy Trains 1850-1909. New Cavendish Books, London UK 2002
Schleicher, Robert: The Big Book of Lionel - the Complete Guide to Running America's Favourite Toy Trains, 2nd ed., Voyageur Press Minneapolis, MN 2011
Souter, G. and J.: Classic Toy Trains. Motorbooks Intl., St. Paul, MN 1999/2002
Souter, G. and J.: Modern Toy Trains. Motorbooks Intl., St.Paul MN 2002
Williams, Guy R., The World of Model Trains, Railbird Reference for André Deutsch Ltd. London UK 1970 

INTERNET
Binns Road (UK)
Jones, Keith: Trix from 1935 to 1973. TTR Collectors' Association, Powerpoint presentation, unpublished
Train Collectors Association, USA, Western Division: http://www.tcawestern.org/
Train Collectors Association, USA, Western - Manufacturers index
(The) Train Collectors Society (UK) Any Make, Any Age, Any Gauge: https://traincollectors.co.uk/
van der Lubbe, Fred: Gauge and Scale
van der Lubbe, Fred: E-books on various toy and model trains: http://sncf231e.nl/my-e-books/