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  1. By: Hopkins, Lewis S.
    Type: Article
    In: American fern journal
    Volume: 3
    Date: 1913
    Page Range: 17--18
    Publication Info: [Washington, etc.] American Fern Society
  2. By: Hopkins, Lewis S.
    Type: Article
    In: American fern journal
    Volume: 9
    Date: 1919
    Page Range: 86--88
    Publication Info: [Washington, etc.] American Fern Society
  3. By: Hopkins, Lewis S.
    Type: Article
    In: American fern journal
    Volume: 1
    Date: 1911
    Page Range: 101--103
    Publication Info: [Washington, etc.] American Fern Society
  4. By: Hopkins, Lewis S.
    Type: Article
    In: American fern journal
    Volume: 3
    Date: 1913
    Page Range: 116--118
    Publication Info: [Washington, etc.] American Fern Society
  5. By: Hopkins, Lewis S.
    Type: Article
    In: Annals of the Carnegie Museum
    Volume: 11
    Issue: 3-4
    Date: 1917-10
    Page Range: 362--363
    Publication Info: [Pittsburgh], Published by authority of the Board of Trustees of the Carnegie Institute, 1901-
  6. By: Hopkins, Lewis S.
    Type: Article
    In: American fern journal
    Volume: 1
    Date: 1911
    Page Range: 100--101
    Publication Info: [Washington, etc.] American Fern Society
  7. By: Jennings, Otto E. (Otto Emery), - Hopkins, Lewis S.
    Type: Article
    In: American fern journal
    Volume: 3
    Date: 1913
    Page Range: 38--48
    Publication Info: [Washington, etc.] American Fern Society
  8. By: Hopkins, Lewis S.
    Type: Article
    In: Torreya
    Volume: 19
    Issue: 12
    Date: 1919
    Page Range: 243--244
    Publication Info: Burlington, Vt, Torrey Botanical Club, 1901-1945