Here's a specific list of the maps and books you might like to look at before your trip. As we find other map sources, we'll let you know. Meanwhile, be sure to check out your local 4x4 Shop, REI, Barnes & Noble, Borders, and other outdoors, map, and book stores for detailed maps and books of the area.
www.4x4books.com
Maps
DeLorme COLORADO Atlas & Gazetteer Topographic Map
TOPO! Interactive Maps for San Juans, Telluride, and Southern Colorado Wilderness Areas
Books
Guide to Colorado Backroads & 4-Wheel Drive Trails
4WD TRAILS: Southwest Colorado
4-Wheel Drive Roads & Ghost Towns of the San Juans
Videos
Jeeping the San Juans - Colorado High Country Series
Rick Russell's Silverton, Colorado Off Highway Adventure (mine came with Sidekick map)