• Scientific American 1877-11-03 1269 visits Scientific American 1877-11-03
  • Scientific American 1882-06-10 1512 visits Scientific American 1882-06-10
  • Scientific American 1897-10-23 865 visits Scientific American 1897-10-23
  • Scientific American 1897-11-13 906 visits Scientific American 1897-11-13
  • Scientific American 1897-12-18 908 visits Scientific American 1897-12-18
  • Scientific American 1903-03-07 882 visits Scientific American 1903-03-07
  • Scientific American 1903-09-26 800 visits Scientific American 1903-09-26
  • Scientific American 1903-12-12a 1124 visits Scientific American 1903-12-12a
  • Scientific American 1919-06-14 1050 visits Scientific American 1919-06-14