1. 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.
2. Data on wilderness experience stewardship from a 2001-2002 visitor survey at Gates of the Arctic National Park & Preserve
- Author(s):
- Glaspell, Brian; Watson, Alan E.; Kneeshaw, Katie; Pendergrast, Don; Christensen, Neal A.; Liljeblad, Adam