http://www.geocities.com/~oldtimefiddler/otresource.html This one is quite good. Be sure to check out the old time fiddlers hall of fame page. You can even hear Eck Robertson play! Like any good site, it has lots of links that will take you just about anywhere you want to go.

http://www.mindspring.com/~oth/noframes.htm The Old Time Herald. The best of the magazines devoted to the early history of OTC and today's performers playing music in the old time way.