Names
- Smith, William Alden, 1859-1932.1
- 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
- Specular (Ship)1
- Spill, William Ambrose, 1876-1
- Spill, William Ambrose, 1876-.1
- Sproul, .Robert Gordon, 1891-1975.1
- Sproul, Robert Gordon, 1891-1975.1
- St. Clair Tunnel Company.1
- Staebler, Edward William, 1872-1946.1
- Staebler, Neil, 1905-1
- Staebler, Neil, 1905-2000.1
- Stanley, Albert A. (Albert Augustus), 1851-1932.1
- Staples & Covell.1
- Starr, Floyd Elliot, 1883-1980.1
- Stason, E. Blythe (Edwin Blythe), 1891-1972.1
- Stone, Ralph, 1868-1956.1