Railroad Museum of Oklahoma
http://www.oknrail.org/ - A fine model railroad club based in the OKC area. Oklahoma N-Rail is dedicated to N-scale railroading.
http://www.atsfrr.org - The Santa Fe Railway Historical & Modeling Society. Benefits of membership include a quarterly magazine, Santa Fe-specific books and information, modeling resources, a quarterly newsletter and archives.
http://www.ntrak.org - Everything you might want to know about N-scale modular railroading.
www.cowcatchermagazine.com - Cowcatcher Round-Up is an excellent bi-monthly publication put out by the Cowcatcher Division of the Lone Star Region, NMRA. The newsletter outlines model railroad activities taking place in Texas and surrounding states
Historical Railway Information
https://thelibrary.org/lochist/frisco/about.cfm - History site for the Frisco Railroad.
http://www.katyrailroad.org/ - Katy Railroad Historical Society site.
http://www.waynoka.org/ - Home of the Waynoka Historical Society, one of this site's features is the old Santa Fe depot with its original Harvey House in Waynoka, Oklahoma.
http://www.kcshs.org - The Kansas City Southern Historical Society.
http://mopac.org - Missouri Pacific Historical Society
http://ok.railfan.net/pages/oklist.html - The Oklahoma list is a catalog of the remaining historic railroad structures and equipment in Oklahoma.
http://www.nctrans.org/ - The website for the North Carolina Transportation Museum.
http://www.nevadanorthernrailway.net - The Nevada Northern Railway Museum is dedicated to the restoration, preservation, interpretation, and operation of the Nevada Northern Railway historic facilities, yards, and rail collection.
Trains and Railroad Equipment
http://www.steamlocomotive.com/ - A super site for what is arguably the greatest steam locomotive that ever lived.
http://www.aaprco.com/ - The American Association of Private Railroad Car Owners.
http://www.ozarkmountainrailcar.com – Railroad equipment for sale of all types.