1. U.S. National Park Service Central Alaska Network 4175 Geist Road Fairbanks 99709 AK USA
2. U.S. Geological Survey, Massachusetts Cooperative Fish and Wildlife Research Unit, Department of Environmental Conservation University of Massachusetts 160 Holdsworth Way Amherst 01003 MA USA
3. U.S. National Park Service 215 South Ferry Road Narragansett 02882 RI USA
4. U.S. National Park Service Lake Clark National Park and Preserve, General Delivery, Port Alsworth 99653 AK USA