There is a wealth of information on the WWW and elsewhere about Yellowstone. My visits to Yellowstone have all been memorable. I definitely intend to repeat the winter in Yellowstone excursion, as it was fantastic. Let me encourage you to take advantage of the wealth offered by this National Park, while we still have it to enjoy. I just read elsewhere that Norris Campground will be closed during 1996, due to budgetary cutbacks; we can't take our park system for granted or we'll all lose it! Write your congressman!
In the meantime, here are some collected links you might enjoy about Yellowstone.
Yellowstone Road Map
Yellowstone Journal
The Total Yellowstone Page
YELLOWSTONE NATIONAL PARK (National Park Service)
Yellowstone Geysers
The International Yellowstone Association
THE YELLOWSTONE SNOWMOBILING GUIDE
Yellowstone National Park (Montana Travel Guide)
Yellowstone National Park
GORP - Yellowstone National Park
Hot springs, Yellowstone National Park, USA.
Flagg Ranch
Yellowstone National Park, David Monteit FAQ
Yellowstone Snowmobile Trip
Cool Works(sm) Profile