U.S. Department of Agriculture1. Frank Church-River of No Return Wilderness: data from 1996 survey of unique tributary visitors
- Author(s):
- Watson, Alan E.; Hunger, Donald H.; Christensen, Neal A.; Spildie, David R.; Becker, Kurt G.; Comstock, Jeff
2. Frank Church–River of No Return Wilderness: data from 1995 survey of commercial and private boat users of the Salmon River
- Author(s):
- Hunger, Donald H.; Watson, Alan E.; Becker, Kurt G.
3. Boundary Waters Canoe Area Wilderness: 1991 visitor survey data
- Author(s):
- Watson, Alan E.; Cole, David N.; Cronn, Richard; Sullivan, Z. Kent
4. 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
5. Data from monitoring inter-group encounters at the Alpine Lakes Wilderness in 1991
- Author(s):
- Watson, Alan E.; Cronn, Rich; Christensen, Neal A.