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  1. By: Yack, H. L.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 46
    Issue: 1
    Date: 1932-01
    Page Range: 21--21
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Yack, H. L.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 45
    Issue: 7
    Date: 1931-10
    Page Range: 179--179
    Publication Info: Ottawa Ottawa Field-Naturalists' Club