1. 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. Campsite condition data for the San Rafael Wilderness
- Author(s):
- Cole, David N.; Spildie, David R.
U.S. Department of Agriculture