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  1. By: Bangs, Outram, - Penard, T E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 34
    Date: 1921
    Page Range: 89--92
    Publication Info: Washington, Biological Society of Washington,
  2. By: Bangs, Outram, - Penard, T E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 35
    Date: 1922
    Page Range: 226--226
    Publication Info: Washington, Biological Society of Washington,
  3. By: Bangs, Outram, - Penard, T E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 35
    Date: 1922
    Page Range: 223--224
    Publication Info: Washington, Biological Society of Washington,
  4. By: Penard, T E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 36
    Date: 1923
    Page Range: 63--64
    Publication Info: Washington, Biological Society of Washington,
  5. By: Penard, T E
    Type: Article
    In: The Auk
    Volume: 35
    Date: 1918
    Page Range: 80--81
    Publication Info: Washington, D.C, American Ornithologists' Union, etc, 1884-
  6. By: Penard, T E
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 36
    Date: 1923
    Page Range: 59--62
    Publication Info: Washington, Biological Society of Washington,