Ann Arbor Bicycle Touring Society
Washtenaw Bicycling and Walking Coalition (WBWC)
Bicycling Info (Pedestrian and Bicycle Information Center, Chapel Hill, NC)
Bicycle Helmet Safety Institute
Helmets
- Frequently Asked Questions
Sheldon Brown
Articles
by Sheldon Browns and others (Harris Cyclery, West Newton, Mass)
Aberdeen Bike and Fitness (Chelsea)
Cycling News Groups (via Google)