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  1. By: Worthington, W. W. - Todd, W. E. Clyde (Walter Edmond Clyde),
    Type: Article
    In: The Wilson bulletin
    Volume: 38
    Issue: 4
    Date: 1926
    Page Range: 204--229
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Todd, W. E. Clyde (Walter Edmond Clyde), - Worthington, W. W.
    Type: Article
    In: Annals of the Carnegie Museum
    Volume: 7
    Issue: 3-4
    Date: 1911-10
    Page Range: 388--464
    Publication Info: [Pittsburgh], Published by authority of the Board of Trustees of the Carnegie Institute, 1901-