- L. C. Angle, Jr., Collection, 1860/20014
- L. D. Arnett, Collector, Papers regarding West Virginia University Students in World War I, 1917/19441
- L. S. Rhodes & Sons Papers, 1886/19232
- L.B. Watts diary, 1916/19441
- L.J. Forman Papers, 1873/19341
- L.J. Forman Papers, 1894/19311
- Ladies of the Maccabees, Progressive Hive No. 8, Morgantown, Papers, 1907/19461
- Ladwig Family Papers, 1870/195917
- Laine family papers, 1772/19616
- Land Grants, 1749/19851
- Land Papers Miscellaneous, 1803/19331
- Land Records of the MVLA, 1858/20063
- Land Surveys, 1815/19431
- Landon Family Papers, 1877/19263
- Langdon T. Hankins Daybook and Ledger, 1921/19301