Doc's Route 66 Page - Information on riding Route 66 by motorcycle and a nostalgia essay.
National Historic Route 66 Federation The only nationwide, nonprofit organization working to save the entire stretch of "America's Main Street." In this day of commercialism of Route 66, it is worth a look. A nice photo gallery, also.
Swa Frantzen's Route 66 Mother Road Page Swa Franzen's Route 66 Mother Road Page - an incredible page, full of information, photo gallery, maps, and especially one of the best turn-by-turn and mile-by-mile route instructions around. It is starting to get a bit too commercial with ads for companies living on Route 66 fans. - Updated 1/1/2004 - This is the new link.
Route 66 U.S.A.
Website of the International Route 66 Association in Lake Havasu City, AZ and
the Route 66 Highway Patrol. They also offer souvenirs and a catalog, so a question exist if they are really a commercial site.
Route 66 After Shave
A German site (in German) that talks about the Mother Road and the American dream by selling Route 66 after shave.