Links
Here's a good book for MST trail hikers by Walt Weber, available from Amazon
Carolina Mountain Club and its members interface with many other trail-related organizations. Here are links to their sites:
American Hiking Society
Appalachian Trail Conservancy
A.T. details
A.T. maintaining clubs
Blue Ridge Hiker - hiking trail guides for Dupony State Forest, Gorges State Park, and Pisgah Ranger District
Blue Ridge Parkway
Blue Ridge Parkway Foundation
Carolina Mountain Land Conservancy
Diamond Brand Outdoors
Friends of the Blue Ridge Parkway
Friends of the Mountains-to-Sea Trail
Friends of the Smokies
Frugal Backpacker
Georgia Appalachian Trail Club
Great Smoky Mountains National Park
900 Miler Challenge
Greeneville Hiking Club (TN)
Greenville Natural History Association (SC)
High Country Hikers
Hiker to Hiker
Hiker Resource Guide USOutdoor.com
Meetup - The Asheville Hiking Group
Nantahala Hiking Club
National Forests in North Carolina
Nature Conservancy
Rattlesnake Lodge
Smoky Mountains Hiking Club
Southern Appalachian Highlands Conservancy
Tennessee Eastman Hiking and Canoeing Club
