Names
- Saginaw, Tuscola and Huron Railroad Company.1
- Saldern Logging Company.1
- Seaman & Webster.1
- Shay, Ephraim, 1839-1916.1
- Solvay Process Company.1
- Soo Line Railroad Company.1
- South Haven and Eastern Railroad Company.1
- Southern Pacific Railroad Company.1
- Southern Railway (U.S.)1
- St. Clair Tunnel Company.1
- Staples & Covell.1
- Stoner, Claude Thomas, 1899-1977.1
- Stoner, Claude Thomas.1
- Sykes, W. L.1
- Temiskaming and Northern Ontario Railway.1
- Thayer Lumber Company.1
- Thousand Islands Railway.1
- Toledo and South Haven Railroad Company.1
- Toledo and Western Railway Company.1
- Toledo, Ann Arbor and Jackson Railroad Company.1