http://www.trainorders.com
2. TrainFinder
http://www.trainfinder.com
3. The Lionel Station
http://www.lionel.com
4. Classic Toy Trains
http://www.classtrain.com
5. Model Railroader
http://www.modelrailroader.com
6. Setco Trains
http://www.setcotrains.com
7. Train City
http://www.traincity.com
8. Toy Train Operating Society
http://www.ttos.org
9. Model Railroad Industry Association
http://www.MRIA.org
10. National Model Railroad Association
http://www.nmra.org