1. 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. Bob Marshall Wilderness Complex (BMWC) 1982 visitor characteristics, attitudes, and use patterns
- Author(s):
- Lucas, Robert C.