Names
- Smith, J. Allen (James Allen), 1860-1926.1
- Smith, John McMunn C., 1853-1923.1
- Smith, Warren Lounsbury, 1914-1972.1
- Southern Pacific Company.1
- Southern Railway (U.S.)1
- St. Louis Southwestern Railway Company.1
- St. Louis-San Francisco Railway Company.1
- Stanley, Augustus Owsley, 1867-1958.1
- Stearns, Justus S. (Justus Smith), 1845-1
- Stearns, Justus S. (Justus Smith), b. 1845.1
- Steiner, Peter Otto, 1922-1
- Stephens, E. W.1
- Stolper, Wolfgang F.1
- Suits, Daniel Burbidge, 1918-1
- Taussig, Frank William, 1859-1940.1
- Taylor, Graham, 1851-1938.1
- Texarkana and Fort Smith Railway Company.1
- Texas & Pacific Railway.1
- Theodore Adams1
- Thomas Adams1