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- Vaux family (Philadelphia USA) 21
- Mary M. Vaux (Philadelphia USA) 9
- Yoshu Chikanobu (1838 – 1912, Japanese) 9
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- Lewis, Meriwether 4
- Mary Schaffer (Philadelphia, USA) - attributed to 4
- Whymper, Edward 4
- Maclean, John 3
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- Wilcox, Walter Dwight 3
- Wundt, Theodor Karl Wilhelm von 3
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