- Sabra Lucinda (Miner) Sturgiss Papers, 1838/19091
- Scott-Palmer Family Papers, 1856/19171
- Stephen B. Elkins Correspondence and Records relating to Coal, Railroad, and Other Industries, 1884/19291
- Stevens Coal Company Records, 1891/19071
- Thompson Family of Canaan Valley Business and Family Papers, 1863/2002, bulk 1880/19301
- W. Jett Lauck papers, 1900/19521
- West Virginia Midland Railroad Company Records, 1903/19331
- West Virginia, Secretary of State Archives, 1861/19391
- William Gordon Worley (1846-1928) Papers, 1853/19211
- William Nelson Page (1854-1932) Papers, 1860/19241
- William S. Downs, Engineering Professor, Papers, 1900/19261
- Wilson-Lewis Family Papers, 1693/19421
- Winding Gulf Coals, Inc., Records, 1888/19501