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  1. By: Johnston, Richard F - Hardy, John William
    Type: Article
    In: The Wilson bulletin
    Volume: 74
    Issue: 3
    Date: 1962
    Page Range: 243--262
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Johnston, Richard F
    Type: Article
    In: The Wilson bulletin
    Volume: 68
    Issue: 2
    Date: 1956
    Page Range: 91--102
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  3. By: Johnston, Richard F
    Type: Article
    In: The Wilson bulletin
    Volume: 102
    Issue: 2
    Date: 1990
    Page Range: 213--225
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-