1. Department of Geography, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada
2. National Snow and Ice Data Center, Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, Mailing address: P.O. Box 241, Clyde River, Nunavut, X0A 0E0, Canada
3. Department of Anthropology, McGill University, Leacock Building, Room 718, 855 Sherbrooke Street West, Quebec, H3A 2T6, Canada
4. c/o Martha Dowsley, Department of Geography, Lakehead University, 955 Oliver Road, Thunder Bay, ON, P7B 5E1, Canada