Names
- St. Clair Tunnel Company.1
- St. Louis Southwestern Railway Company.1
- St. Louis-San Francisco Railway Company.1
- Stanley, Augustus Owsley, 1867-1958.1
- Staples & Covell.1
- Stearns, Justus S. (Justus Smith), 1845-1
- Stearns, Justus S. (Justus Smith), b. 1845.1
- Stephens, E. W.1
- Stoner, Claude Thomas, 1899-1977.1
- Stoner, Claude Thomas.1
- Sykes, W. L.1
- Taussig, F. W. (Frank William), 1859-1940.1
- Taussig, Frank William, 1859-1940.1
- Taylor, Graham, 1851-1938.1
- Temiskaming and Northern Ontario Railway.1
- Texarkana and Fort Smith Railway Company.1
- Texas & Pacific Railway.1
- Thayer Lumber Company.1
- Theodore Adams1
- Thomas Adams1