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  1. By: Drever, Mark - Harestad, Alton S.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 112
    Issue: 4
    Date: 1998
    Page Range: 676--683
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Weir, Richard D. - Harestad, Alton S. - Corbould, Fraser B.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 123
    Issue: 2
    Date: 2009-04-01
    Page Range: 126--132
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Harestad, Alton S.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 104
    Issue: 3
    Date: 1990
    Page Range: 483--484
    Publication Info: Ottawa Ottawa Field-Naturalists' Club