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  1. By: Ketterson, Ellen D
    Type: Article
    In: The Wilson bulletin
    Volume: 91
    Issue: 3
    Date: 1979
    Page Range: 371--383
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Nolan, Val - Ketterson, Ellen D
    Type: Article
    In: The Wilson bulletin
    Volume: 95
    Issue: 4
    Date: 1983
    Page Range: 603--620
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Ketterson, Ellen D - Nolan, Val
    Type: Article
    In: The Wilson bulletin
    Volume: 95
    Issue: 4
    Date: 1983
    Page Range: 628--635
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  4. By: Nolan, Val - Ketterson, Ellen D
    Type: Article
    In: The Wilson bulletin
    Volume: 102
    Issue: 3
    Date: 1990
    Page Range: 469--479
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-