- Santa Fe Railroad -1941A 623 visits
- Santa Fe Railroad -1948A 643 visits
- Santa Fe Railroad -1948B 95 visits
- Seaboard Air Line -1934A 85 visits
- Seattle City Railway Bonds -1891A 356 visits
- Southern Kansas Railway -1887A 627 visits
- Southern Pacific -1896A 110 visits
- Southern Pacific -1905A 834 visits
- Southern Pacific -1906A 138 visits
- Southern Pacific -1906B 114 visits
- Southern Pacific -1907A 728 visits
- Southern Pacific -1912A 705 visits
- Southern Pacific -1916A 1844 visits
- Southern Pacific -1926A 331 visits
- Southern Pacific -1926B 119 visits
- Southern Pacific -1934A 89 visits
- Southern Pacific -1936A 868 visits
- Southern Pacific -1939A 675 visits
- Southern Pacific -1939B 684 visits
- Southern Pacific -1939C 840 visits
- Southern Pacific -1939D 759 visits
- Southern Pacific -1939E 753 visits
- Southern Pacific -1939F 828 visits
- Southern Pacific -1939G 721 visits
- Southern Pacific -1940A 646 visits
- Southern Pacific -1940B 713 visits
- Southern Pacific -1940C 853 visits
- Southern Pacific -1940D 699 visits
- Southern Pacific -1940E 700 visits
- Southern Pacific -1942A 701 visits
- Southern Pacific -1943A 688 visits
- Southern Railway -1899A 1546 visits
- Southern Railway -1900'sA 1226 visits
- Southwestern Limited -1894A 332 visits
- Spokane Portland and Seattle Railway -1911A 860 visits
- Swiss Federal Railroads -1934A 737 visits
- Swiss Federal Railroads -1936 123 visits
- Ulster and Delaware Railroad -1900A 699 visits
- Union Pacific -1906A 858 visits
- Union Pacific -1906B 943 visits
- Union Pacific -1910A 1378 visits
- Union Pacific -1912A 1409 visits
- Union Pacific -1926A 330 visits
- Union Pacific -1927A 133 visits
- Union Pacific -1927B 125 visits
- Union Pacific -1931A 117 visits
- Union Pacific -1937A 962 visits
- Union Pacific -1937B 733 visits
- Union Pacific -1946A 1103 visits
- United States Railroad Administration -1919A 178 visits
- United States Railroad Administration -1919B 158 visits
- United States Railroad Administration -1919C 155 visits
- United States Railroad Administration -1919D 155 visits
- United States Railroad Administration -1919E 159 visits
- United States Railroad Administration -1919F 155 visits
- United States Railroad Administration -1919G 129 visits
- Wabash Railroad -1893A 355 visits
- Wabash Railroad -1900'sA 1820 visits
- Wabash Railroad -1901A 789 visits
- Wabash Railroad -1904A 2388 visits
- Washington and Southwestern Railroad -1899A 1797 visits
- Western Railroads -1935A 1445 visits