1. Department of Environmental Science, William Paterson University, Wayne, New Jersey
2. Tree-Ring Lab, Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York
3. Centralia College, Centralia, Washington
4. International Research Institute for Climate and Society, Columbia University, Palisades, New York
5. Independent education consultant, Durham, New Hampshire
6. Department of Earth and Environmental Science, Columbia University, New York, New York