Book excerpt: This reference shows where to find the trading posts, galleries, auctions, artists, and museums of the Four Corners Region. "Whether you're an experienced collector looking for new art sources or a beginner looking to buy your first Navajo rug, the "Trading Post Guidebook" will get you out of the galleries and into the Four Corners backcountry".--"The Arizona Republic". 250 photos, 115 in color.