1. Social conditions and visitor flow data for the Boundary Waters Canoe Area Wilderness (1st Edition)
- Author(s):
- Douglas, Mark L.; Borrie, William T.; Watson, Alan E.
2. John Muir Wilderness and Sequoia-Kings Canyon National Parks Wilderness: 1990 visitor survey data
- Author(s):
- Watson, Alan E.; Niccolucci, Michael J.; Williams, Daniel R.
3. Sequoia and Kings Canyon National Parks (SEKI) Wilderness: 2011 visitor survey data
- Author(s):
- Martin, Steve R.; Blackwell, Jessica; Watson, Alan E.