| 1851/scientific-american-v06-n31-1851-04-19.pdf | 31.28 MB |
| 1867/scientific-american-v16-n26-1867-06-29.pdf | 24.83 MB |
| 1867/scientific-american-v16-n03-1867-01-19.pdf | 23.25 MB |
| 1859/scientific-american-v01-n08-1859-08-20.pdf | 22.88 MB |
| 1868/scientific-american-v19-n06-1868-08-05.pdf | 21.11 MB |
| 1869/scientific-american-v20-n01-1869-01-01.pdf | 21 MB |
| 1869/scientific-american-v20-n03-1869-01-16.pdf | 20.66 MB |
| 1866/scientific-american-v15-n26-1866-12-22.pdf | 20.64 MB |
| 1869/scientific-american-v20-n05-1869-01-30.pdf | 20.5 MB |
| 1872/scientific-american-v26-n26-1872-06-22.pdf | 20.13 MB |
| 1867/scientific-american-v16-n24-1867-06-15.pdf | 20.13 MB |
| 1868/scientific-american-v19-n01-1868-07-01.pdf | 18.97 MB |
| 1859/scientific-american-v01-n21-1859-11-19.pdf | 18.79 MB |
| 1874/scientific-american-v31-n09-1874-08-29.pdf | 18.76 MB |
| 1867/scientific-american-v16-n22-1867-06-01.pdf | 18.71 MB |
| 1867/scientific-american-v17-n07-1867-08-17.pdf | 18.6 MB |
| 1866/scientific-american-v14-n22-1866-05-26.pdf | 18.58 MB |
| 1868/scientific-american-v19-n04-1868-07-22.pdf | 18.49 MB |
| 1869/scientific-american-v21-n14-1869-10-02.pdf | 18.35 MB |
| 1868/scientific-american-v18-n14-1868-04-04.pdf | 18.31 MB |
| 1867/scientific-american-v16-n12-1867-03-23.pdf | 18.13 MB |
| 1873/scientific-american-v29-n20-1873-11-15.pdf | 18.13 MB |
| 1865/scientific-american-v13-n12-1865-09-16.pdf | 17.98 MB |
| 1847/scientific-american-v02-n45-1847-07-31.pdf | 17.9 MB |
| 1866/scientific-american-v15-n24-1866-12-08.pdf | 17.82 MB |
| 1860/scientific-american-v02-n01-1860-01-02.pdf | 17.54 MB |
| 1869/scientific-american-v21-n21-1869-11-20.pdf | 17.46 MB |
| 1856/scientific-american-v11-n38-1856-05-31.pdf | 17.45 MB |
| 1859/scientific-american-v01-n06-1859-08-06.pdf | 17.42 MB |
| 1874/scientific-american-v31-n05-1874-08-01.pdf | 17.38 MB |
| 1903/scientific-american-v89-n22-1903-11-28.pdf | 17.31 MB |
| 1887/scientific-american-v56-n05-1887-01-29.pdf | 17.25 MB |
| 1868/scientific-american-v19-n05-1868-07-29.pdf | 17.22 MB |
| 1869/scientific-american-v20-n04-1869-01-23.pdf | 17.18 MB |
| 1887/scientific-american-v17-n25-1867-12-21.pdf | 17.08 MB |
| 1870/scientific-american-v23-n18-1870-10-29.pdf | 17.04 MB |
| 1869/scientific-american-v21-n20-1869-11-13.pdf | 17.03 MB |
| 1868/scientific-american-v19-n11-1868-09-09.pdf | 16.98 MB |
| 1908/scientific-american-v98-n04-1908-01-25.pdf | 16.95 MB |
| 1859/scientific-american-v01-n09-1859-08-27.pdf | 16.67 MB |
| 1848/scientific-american-v03-n52-1848-09-16.pdf | 16.65 MB |
| 1859/scientific-american-v01-n10-1859-09-03.pdf | 16.6 MB |
| 1893/scientific-american-v69-n03-1893-07-15.pdf | 16.42 MB |
| 1867/scientific-american-v17-n04-1867-07-27.pdf | 16.39 MB |
| 1867/scientific-american-v16-n11-1867-03-16.pdf | 16.33 MB |
| 1884/scientific-american-v50-n26-1884-06-28.pdf | 16.2 MB |
| 1869/scientific-american-v21-n26-1869-12-25.pdf | 16.17 MB |
| 1860/scientific-american-v03-n20-1860-11-10.pdf | 16.13 MB |
| 1882/scientific-american-v46-n02-1882-01-14.pdf | 16.12 MB |
| 1875/scientific-american-v32-n01-1875-01-02.pdf | 16.11 MB |