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  1. By: Hamilton, James G. - Powles, P. M.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 97
    Issue: 1
    Date: 1983
    Page Range: 47--56
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Holm, Erling - Hamilton, James G.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 102
    Issue: 4
    Date: 1988
    Page Range: 653--656
    Publication Info: Ottawa Ottawa Field-Naturalists' Club