1. Alaska Department of Fish and Game, PO Box 110024, Juneau, Alaska 99811, USA
2. Wyoming Game and Fish Department, 260 Buena Vista, Lander, Wyoming 82520, USA
3. Washington Department of Fish and Wildlife, PO Box 43200, Olympia, Washington 98501, USA
4. Wildlife Conservation Society Canada, 202 B Avenue, Kaslo, British Columbia V0G 1M0, Canada
5. Colorado Parks and Wildlife, 711 Independent Ave., Grand Junction, Colorado 81507, USA
6. USDA Forest Service, Pacific Southwest Research Station, 1700 Bayview Drive, Arcata, California 95521, USA