The San Diego Newsgroup contingent can be seen having fun and planning their next event at "rec.autos.makers.jeep+willys Unofficial Southern California Web page"
Off-Highway Motor Vehicle Recreation (OHMVR) Division of the California Department of Parks and Recreation
California Off-Highway Vehicle Areas List
off-road.com's trail reports - It's International!
All models are discussed nicely at off-road.com here.
The YJ FAQ has many articles good for even those of us without a YJ.
CJ FAQ???
Jeep Concept Vehicles (Sadly no Icon or Dakar)
Service Manuals and Blueprints
http://studentweb.tulane.edu/cgi-bin/a.out
http://www.ring-pinion.com/index.html
http://www.differentials.com/javaindex.htm
Traction Aiding Devices Frequently Asked Questions
http://www.ok4wd.com/tech/index.html
http://www.4x4now.com/4wht.htm
http://www.performanceunlimited.com/documents.html
DRMS - Defense Reutilization and Marketing Service
Owens Export (surplus military equipment)
Warn - great winches, service and that oh-so-sexy coil over conversion
Quadratec - Cool catalog shop
Advanced Adapters - swaps-r-us
Summit Racing - Great catalog based hot rod parts company with great prices
MIT in El Cajon, CA - URL anyone?
Links to lists of 4WD accessory manufacturers:
SEMA - Links to almost everyone!
Jp magazine - has some good links
Summit Racing's collection of links page is impressive