• Scientific American 1892-03-05 1378 visits Scientific American 1892-03-05
  • Scientific American 1899-07-22 892 visits Scientific American 1899-07-22
  • Scientific American 1899-11-11 1056 visits Scientific American 1899-11-11
  • Scientific American 1903-02-28 1100 visits Scientific American 1903-02-28
  • Scientific American 1904-04-16 939 visits Scientific American 1904-04-16
  • Scientific American 1923-11 1327 visits Scientific American 1923-11