U.S. Department of Agriculture1. Boundary Waters Canoe Area Wilderness: 1991 visitor survey data
- Author(s):
- Watson, Alan E.; Cole, David N.; Cronn, Richard; Sullivan, Z. Kent
2. Boundary Waters Canoe Area Wilderness: 2007 visitor survey data
- Author(s):
- Dvorak, Robert G.; Watson, Alan E.; Christensen, Neal A.; Borrie, William T.; Schwaller, Ann
3. Data from monitoring inter-group encounters at the Alpine Lakes Wilderness in 1991
- Author(s):
- Watson, Alan E.; Cronn, Rich; Christensen, Neal A.
4. Situk River, Alaska: 2003 recreation visitor study data
- Author(s):
- Christensen, Neal A.; Watson, Alan E.; Whittaker, Doug
5. Auyuittuq and Quttinirpaaq National Parks in the eastern Arctic Nunavut Region of Canada: 2003-2004 visitor experience study
- Author(s):
- Watson, Alan E.; Lachapelle, Paul R.; McCool, Stephen F.