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  1. By: Dempsey, J. H. C.
    Type: Article
    In: The Ottawa naturalist
    Volume: 19
    Issue: 12
    Date: 1906-03
    Page Range: 228--231
    Publication Info: Ottawa, Ottawa Field-Naturalists' Club,
  2. By: Dempsey, J. H. C.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 47
    Issue: 1
    Date: 1933-01
    Page Range: 12--12
    Publication Info: Ottawa Ottawa Field-Naturalists' Club