• Scientific American 1923-11 1324 visits Scientific American 1923-11
  • Scientific American 1882-12-30 1177 visits Scientific American 1882-12-30
  • Scientific American 1892-05-28 1147 visits Scientific American 1892-05-28
  • Scientific American 1893-03-11 988 visits Scientific American 1893-03-11
  • Scientific American 1897-10-23 948 visits Scientific American 1897-10-23
  • Scientific American 1897-11-06 1009 visits Scientific American 1897-11-06
  • Scientific American 1897-11-13 989 visits Scientific American 1897-11-13
  • Scientific American 1897-12-18 979 visits Scientific American 1897-12-18