Railroads were the foremost means of transportation during the 19th and early 20th centuries.
- Associated British Railways -1934A 1379 visits
- Associated British Railways -1935A 1042 visits
- Association of American Railroads -1936A 1213 visits
- Association of American Railroads -1945A 1157 visits
- Atlantic Coast Line -1908A 906 visits
- Atlantic Coast Line -1935A 981 visits
- Atlantic Coast Line -1937A 826 visits
- Baltimore and Ohio -1893A 443 visits
- Baltimore and Ohio -1895A 960 visits
- Big Four Railroad -1898A 2547 visits
- Boston and Maine -1903A 2356 visits
- Burlington Route -1892A 422 visits
- Burlington Route -1892B 386 visits
- Burlington Route -1893A 416 visits
- Burlington Route -1900A 892 visits
- Canadian Pacific -1901A 86 visits
- Canadian Pacific -1909A 909 visits
- Canadian Pacific Railway -1919A 85 visits
- Chesapeake and Ohio Railroad -1934A 79 visits
- Chesapeake and Ohio Railroad -1935A 966 visits
- Chesapeake and Ohio Railroad -1935B 920 visits
- Chesapeake and Ohio Railroad -1936A 735 visits
- Chesapeake and Ohio Railroad -1936B 740 visits
- Chesapeake and Ohio Railroad -1936C 735 visits
- Chesapeake and Ohio Railroad -1942A 752 visits
- Chicago and Alton Railroad -1906A 661 visits
- Chicago and Eastern Illinois -1891A 349 visits
- Chicago and Northwestern -1921A 920 visits
- Chicago and Northwestern -1932A 609 visits
- Chicago Great Western -1906A 810 visits
- Chicago Milwaukee and St. Paul -1891A 340 visits
- Chicago Milwaukee and St. Paul -1893A 387 visits
- Chicago, Milwaukee & St. Paul -1900'sA 1555 visits
- Chicago, Milwaukee and St. Paul -1903A 1417 visits
- Chicago, Milwaukee and St. Paul -1907A 1176 visits
- Chicago, Milwaukee and St. Paul -1912A 1047 visits
- Chicago, Milwaukee, and St. Paul -1916A 1268 visits
- Cincinnati Hamilton and Dayton -1891A 314 visits
- Cincinnati Hamilton and Dayton -1891B 350 visits
- Denver and Rio Grande -1891A 314 visits
- Denver and Rio Grande -1891B 355 visits
- Dominion Atlantic Railroad -1900A 937 visits
- Dominion Atlantic Railroad -1936A 687 visits
- Erie Railroad -1891A 359 visits
- Erie Railroad -1891B 326 visits
- Erie Railroad -1902A 744 visits
- Erie Railroad -1934A 68 visits
- Erie Railroad -1935A 737 visits
- Erie Railroad -1936A 831 visits
- Erie Railroad -1937A 950 visits
- Erie Railroad -1937B 717 visits
- Erie Railroad -1938A 657 visits
- Erie Railroad -1943A 770 visits
- Fitchburg Railroad -1896A 82 visits
- German Railroads -1926A 230 visits
- German Railroads -1939A 805 visits
- Grand Trunk Railway -1906A 670 visits
- Grand Trunk Railway -1908A 742 visits
- Grand Trunk Railway -1911A 790 visits
- Grand Trunk Railway -1919A 99 visits
- Great Northern Railway -1906A 847 visits
- Great Northern Railway -1931A 173 visits
- Great Northern Railway -1934A 746 visits
- Great Northern Railway -1946A 751 visits
- Great Northern Railway -1948A 752 visits
- Illinois Central -1891A 401 visits
- India Railways -1934A 706 visits
- Iron Mountain Route -1899A 76 visits
- Jersey Central -1907A 698 visits
- Lackawanna Railroad -1901A 721 visits
- Lackawanna Railroad -1902A 770 visits
- Lackawanna Railroad -1908A 659 visits
- Lake Shore & Michigan Southern -1900'sA 1940 visits
- Lake Shore and Michigan Southern -1900A 81 visits
- Lake Shore and Michigan Southern -1900B 86 visits
- Lehigh Valley Railroad -1906A 779 visits
- Little Rock and Memphis Railroad -1891A 305 visits
- London and North Eastern Railway -1923A 748 visits
- London and North Eastern Railway -1925A 821 visits
- Los Angeles Limited -1910A 868 visits