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2. The migration of geese as an indicator of climate change in the southern Hudson Bay region between 1715 and 1851
3. 1983b. ‘Preliminary analysis of early instrumental temperature records from York Factory and Churchill Factory’, in (ed.), Syllogeus 49, National Museum of Natural Sciences, Ottawa, pp. 203–219.
4. 1985. ‘A dramatic change in the general circulation on the west coast of Hudson Bay in 1760 AD: synoptic evidence based on historic records’, in (ed.), Syllogeus 55, National Museum of Natural Sciences, Ottawa, pp. 219–229.