- Scientific American 1920-10-23 1331 visits
- Scientific American 1901-04-27 1100 visits
- Scientific American 1901-05-04 1094 visits
- Scientific American 1901-05-11 1042 visits
- Scientific American 1901-05-18 1162 visits
- Scientific American 1901-05-25 1064 visits
- Scientific American 1901-06-01 1282 visits
- Scientific American 1901-06-08 1385 visits
- Scientific American 1901-06-15 1162 visits
- Scientific American 1901-06-22 1255 visits
- Scientific American 1901-06-29 1678 visits
- Scientific American 1915-01-16 1403 visits
- Scientific American 1915-01-23 2582 visits
- Scientific American 1915-01-30 1515 visits
- Scientific American 1915-02-13 1266 visits
- Scientific American 1915-02-20 1312 visits
- Scientific American 1915-02-27 1247 visits
- Scientific American 1915-03-13 1451 visits
- Scientific American 1915-03-20 1451 visits
- Scientific American 1915-03-27 1544 visits
- Scientific American 1915-04-10 1350 visits
- Scientific American 1915-04-17 1433 visits
- Scientific American 1915-04-24 1258 visits
- Scientific American 1915-05-15 1540 visits
- Scientific American 1915-05-22 1745 visits
- Scientific American 1915-05-29 1537 visits
- Scientific American 1915-06-12 1401 visits
- Scientific American 1915-06-19 1518 visits
- Scientific American 1915-06-26 1487 visits
- Scientific American 1917-04-21 1743 visits
- Scientific American 1917-04-28 1638 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
- Scientific American 1918-06-22 1391 visits
- Scientific American 1918-06-29 1549 visits
- Scientific American 1918-10-19 1515 visits
- Scientific American 1919-03-15 1486 visits
- Scientific American 1919-05-31 1559 visits
- Scientific American 1919-06-07 1374 visits
- Scientific American 1919-06-14 1390 visits
- Scientific American 1920-07-10 1101 visits
- Scientific American 1920-08-07 1433 visits
- Scientific American 1920-08-14 1413 visits
- Scientific American 1920-08-21 1369 visits
- Scientific American 1920-09-04 1796 visits
- Scientific American 1920-09-11 1268 visits
- Scientific American 1920-09-18 1366 visits
- Scientific American 1920-09-25 1505 visits