- Scientific American 1915-01-16 1403 visits
- Scientific American 1915-01-23 2582 visits
- Scientific American 1915-01-30 1515 visits
- Scientific American 1915-05-22 1745 visits
- Scientific American 1915-05-29 1539 visits
- Scientific American 1917-07-14 1484 visits
- Scientific American 1918-04-27 1829 visits
- Scientific American 1918-06-01 1558 visits
- Scientific American 1918-06-15 1685 visits