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  1. By: Mayor, Alfred Goldsborough
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 58
    Issue: 220
    Date: 1919
    Page Range: 150--160
    Publication Info: Philadelphia, American Philosophical Society,
  2. By: Mayor, Alfred Goldsborough
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 59
    Issue: 220
    Date: 1920
    Page Range: 224--236
    Publication Info: Philadelphia, American Philosophical Society,
  3. By: Mayor, Alfred Goldsborough
    Type: Article
    In: Proceedings of the American Philosophical Society held at Philadelphia for promoting useful knowledge
    Volume: 60
    Issue: 220
    Date: 1921
    Page Range: 62--70
    Publication Info: Philadelphia, American Philosophical Society,