TRAVEL LINKS WORTH VISITING:

Yellowstone Net Superb photography by Russ Finley, an essential newsletter for anyone who cares about the Park, Quicktime movies of geysers erupting, a great discussion forum, and it includes a link to the Old Faithful Web Cam. Watch for bison walking past the geyser!
Yellowstone Treasures The Web site companion to the book by the same name. Undoubtedly the single best resource on Yellowstone; it amazingly combines the basic tourist information with in-depth profiles on geology, wildlife, plant life, Park history and more. A must-read if you're going to Yellowstone, even if you'll only be there for a day.
Of course I am a geyser geek... so I recommend GOSA, the Geyser Observation and Study Association. GOSA
The National Park Service
Black Canyon of the Gunnison National Park In Colorado--one of the Nation's newest National Parks. Spectacular and uncrowded. It's a particular favorite of mine.
US Forest Service Site--National Forests by State
The Great Outdoor Recreation Pages (GORP)  Good info if you can ignore the millions of ads.
Pickatrail An excellent backpacking resource for the U.S. and United Kingdom, the site also offers informative articles on GPS mapping, using a compass and more--and it's commercial free.
Falcon Guides  These books, including the "Scenic Driving" series and "Hiking" series, are essentials for detailed information about what you can see and do from the road or on your feet, along with critical information like how to survive a bear encounter or ford a stream.
PHOTOGRAPHY LINKS:
Craig M. Tanner Photography Stunning landscapes, architecture, people photographs. What's even better--Craig can teach you how he does it! If you have an opportunity to take a photography class from Craig, do so. Check his site or The Rocky Mountain School of Photography for more information.
Russ Finley Photography, for outstanding National Park photos.
If you have ever bought a National Park calendar, photography book, or guide book from the National Geographic Society, you've probably seen David and Marc Muench's photography.

James Kay Photography. Outstanding landscape work, featuring Western U.S. National Parks and wild lands, along with adventure sports photos. James Kay is an advisor to one of my favorite magazines, Outdoor Photographer.
Galen and Barbara Rowell Photography (Mountain Light) Galen and Barbara were an inspiration to all who aspire to shoot great landscapes. This site is not to be missed.
Jess Lee is a commercial photographer specializing in landscapes. His Yellowstone and Grand Teton photography is incredible!
 

Have a link I should add? E-mail me!