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  1. By: Tower, Charlemagne
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 54
    Issue: 216
    Date: 1915
    Page Range: 18--26
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Tower, Charlemagne
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 52
    Issue: 209
    Date: 1913
    Page Range: 234--242
    Publication Info: Philadelphia, American Philosophical Society,