2 links
Adventures Beyond Yellowstone
abyellowstone.com
Guided horseback riding tours, backcountry trout fly fishing trips, and tent camping retreats. Includes trip itinieraries and reservations.
Yellowstone Raft Company
yellowstoneraft.com
Offers whitewater rafting and kayaking trips on the Gallatin, Madison, and Yellowstone Rivers. Includes photo gallery, trip information, and reservations.