- The Applachian Trail Conservancy Home Page
- The Applachian Trail Home Page
- The Chesapeake & Ohio Canal
- The Chesapeake Bay Gateways Network
- Harper's Ferry NHP Visitor Center
- Rails to Trails Conservancy-Trail Links
- National Park Service
- Defenders of Wildlife
- Birds of Prey
- The Wolf Education & Research Center
- North American Wolf Association
- Great Outdoor Recreation Pages
- River and Trail Outfitters
- eNature.com
- Maryland Department of Natural Resources
- Ski Liberty -Liberty Mountian Ski Resort , PA