• Scientific American 1882-01-14 1170 visits Scientific American 1882-01-14
  • Scientific American 1882-06-03 1014 visits Scientific American 1882-06-03
  • Scientific American 1892-05-28 1188 visits Scientific American 1892-05-28
  • Scientific American 1902-02-15 1010 visits Scientific American 1902-02-15
  • Scientific American 1902-03-15 1045 visits Scientific American 1902-03-15
  • Scientific American 1903-06-20 1130 visits Scientific American 1903-06-20
  • Scientific American 1903-09-26 901 visits Scientific American 1903-09-26
  • Scientific American 1903-12-12a 1256 visits Scientific American 1903-12-12a
  • Scientific American 1920-10-23 1246 visits Scientific American 1920-10-23