1. John Muir Project, A Project of Earth Island Institute, 2150 Allston Way, Suite #460, Berkeley, CA 94704, USA
2. Independent Researcher, South Lake Tahoe, CA 96150, USA
3. Independent Researcher, Rohnert Park, CA 94928, USA
4. Wildland Mapping Institute, Ventura, CA 93006, USA
5. Independent Researcher, Georgetown, CA 95634, USA