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  1. By: Humphreys, Gregory
    Type: Article
    In: The Canadian field-naturalist
    Volume: 89
    Issue: 3
    Date: 1975
    Page Range: 326--327
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Kott, Edward - Humphreys, Gregory
    Type: Article
    In: The Canadian field-naturalist
    Volume: 91
    Issue: 4
    Date: 1977
    Page Range: 424--426
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Kott, Edward - Jenkins, Robert E. - Humphreys, Gregory
    Type: Article
    In: The Canadian field-naturalist
    Volume: 93
    Issue: 1
    Date: 1979
    Page Range: 63--66
    Publication Info: Ottawa Ottawa Field-Naturalists' Club