QUOTE: Originally posted by M636C Kerrie, I am not quite clear what information you need! I can't tell you anything about Mexico, but I visited Argentina last year. The railways in Argentina are quite varied, having three rail gauges, one metre (about 3ft 3in), standard (4ft 8.5in) and broad (5ft 6in). The pampas are basically south and west of the capital, Buenos Aires, and the lines are mainly broad gauge. Most of them were owned by a British company, the Buenos Aires Great Southern, but thus was generally known as the Ferrocarril Sud in Argentina. When Peron took over the railways in 1948, the Sud was renamed the Ferrocarril General Roca, after the historic figure credited with eliminating the local Indian (Indigenous) population. In fact, most of the diesel locomotives were painted red and yellow and lettered "Ferrocarril Argentinas", although the long distance passenger trains are now red white and blue, including the locomotives, usually General Motors model GT22C. If you can give me a better idea of the period you are setting the book in, and what part the trains play, I'll try to give you what you need. Peter