• Scientific American 1882-01-14 1101 visits Scientific American 1882-01-14
  • Scientific American 1882-06-03 922 visits Scientific American 1882-06-03
  • Scientific American 1892-05-28 1087 visits Scientific American 1892-05-28
  • Scientific American 1902-02-15 899 visits Scientific American 1902-02-15
  • Scientific American 1902-03-15 947 visits Scientific American 1902-03-15
  • Scientific American 1903-06-20 1037 visits Scientific American 1903-06-20
  • Scientific American 1903-09-26 829 visits Scientific American 1903-09-26
  • Scientific American 1903-12-12a 1171 visits Scientific American 1903-12-12a
  • Scientific American 1920-10-23 1185 visits Scientific American 1920-10-23