Railroads were the foremost means of transportation during the 19th and early 20th centuries.
- Associated British Railways -1934A 1559 visits
- Associated British Railways -1935A 1193 visits
- Association of American Railroads -1936A 1354 visits
- Association of American Railroads -1945A 1286 visits
- Atlantic Coast Line -1908A 1054 visits
- Atlantic Coast Line -1935A 1113 visits
- Atlantic Coast Line -1937A 936 visits
- Baltimore and Ohio -1893A 548 visits
- Baltimore and Ohio -1895A 1061 visits
- Big Four Railroad -1898A 2925 visits
- Boston and Maine -1903A 2632 visits
- Burlington Route -1892A 492 visits
- Burlington Route -1892B 445 visits
- Burlington Route -1893A 487 visits
- Burlington Route -1900A 997 visits
- Canadian Pacific -1901A 189 visits
- Canadian Pacific -1909A 999 visits
- Canadian Pacific Railway -1919A 176 visits
- Chesapeake and Ohio Railroad -1934A 162 visits
- Chesapeake and Ohio Railroad -1935A 1058 visits
- Chesapeake and Ohio Railroad -1935B 1038 visits
- Chesapeake and Ohio Railroad -1936A 824 visits
- Chesapeake and Ohio Railroad -1936B 869 visits
- Chesapeake and Ohio Railroad -1936C 839 visits
- Chesapeake and Ohio Railroad -1942A 828 visits
- Chicago and Alton Railroad -1906A 730 visits
- Chicago and Eastern Illinois -1891A 444 visits
- Chicago and Northwestern -1921A 1002 visits
- Chicago and Northwestern -1932A 716 visits
- Chicago Great Western -1906A 899 visits
- Chicago Milwaukee and St. Paul -1891A 428 visits
- Chicago Milwaukee and St. Paul -1893A 489 visits
- Chicago, Milwaukee & St. Paul -1900'sA 1906 visits
- Chicago, Milwaukee and St. Paul -1903A 1672 visits
- Chicago, Milwaukee and St. Paul -1907A 1370 visits
- Chicago, Milwaukee and St. Paul -1912A 1175 visits
- Chicago, Milwaukee, and St. Paul -1916A 1467 visits
- Cincinnati Hamilton and Dayton -1891A 420 visits
- Cincinnati Hamilton and Dayton -1891B 427 visits
- Denver and Rio Grande -1891A 436 visits
- Denver and Rio Grande -1891B 426 visits
- Dominion Atlantic Railroad -1900A 1009 visits
- Dominion Atlantic Railroad -1936A 773 visits
- Erie Railroad -1891A 468 visits
- Erie Railroad -1891B 431 visits
- Erie Railroad -1902A 825 visits
- Erie Railroad -1934A 159 visits
- Erie Railroad -1935A 844 visits
- Erie Railroad -1936A 947 visits
- Erie Railroad -1937A 1123 visits
- Erie Railroad -1937B 819 visits
- Erie Railroad -1938A 764 visits
- Erie Railroad -1943A 904 visits
- Fitchburg Railroad -1896A 187 visits
- German Railroads -1926A 377 visits
- German Railroads -1939A 900 visits
- Grand Trunk Railway -1906A 751 visits
- Grand Trunk Railway -1908A 824 visits
- Grand Trunk Railway -1911A 858 visits
- Grand Trunk Railway -1919A 171 visits
- Great Northern Railway -1906A 990 visits
- Great Northern Railway -1931A 302 visits
- Great Northern Railway -1934A 848 visits
- Great Northern Railway -1946A 849 visits
- Great Northern Railway -1948A 858 visits
- Illinois Central -1891A 531 visits
- India Railways -1934A 846 visits
- Iron Mountain Route -1899A 211 visits
- Jersey Central -1907A 805 visits
- Lackawanna Railroad -1901A 836 visits
- Lackawanna Railroad -1902A 899 visits
- Lackawanna Railroad -1908A 783 visits
- Lake Shore & Michigan Southern -1900'sA 2220 visits
- Lake Shore and Michigan Southern -1900A 215 visits
- Lake Shore and Michigan Southern -1900B 216 visits
- Lehigh Valley Railroad -1906A 894 visits
- Little Rock and Memphis Railroad -1891A 431 visits
- London and North Eastern Railway -1923A 867 visits
- London and North Eastern Railway -1925A 925 visits
- Los Angeles Limited -1910A 989 visits