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  1. By: Thurber, Joanne M. - Peterson, R O - Drummer, Thomas D.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 1
    Date: 1991
    Page Range: 34--40
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Route, W T - Peterson, R O
    Type: Article
    In: The Canadian field-naturalist
    Volume: 105
    Issue: 4
    Date: 1991
    Page Range: 567--568
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  3. By: Jordan, Peter A. - Peterson, R O - LeDoux, K. A.
    Type: Article
    In: The Canadian field-naturalist
    Volume: 124
    Issue: 1
    Date: 2010-01-01
    Page Range: 54--56
    Publication Info: Ottawa Ottawa Field-Naturalists' Club