The HPV Library. Selected articles and reference material. Books, videos, software.
All-terrain vehicles
Recumbent Plans
Cargo haulers & Trailers
Recumbent Trikes
Folding bikes
Sport/Recreation
Human Powered Boats
Dealers
Mobility
Various Materials for Bike Builders
Outdoor Fitness Machines
Components and Specialty Products
Rail bikes
Power assist: Bicycle-power.com is the place to go for information related to powering a bicycle or scooter with an electric motor, gas engine or even a hydrogen powered fuel cell battery.
Recumbent Bikes
Unique Vehicles
How to add your own home pages to the Source Guide.
Power assist: