- L. C. Angle, Jr., Collection, 1860/20013
- L. D. Arnett, Collector, Papers regarding West Virginia University Students in World War I, 1917/19441
- L. S. Rhodes & Sons Papers, 1886/19231
- L.B. Watts diary, 1916/19441
- Labor History Collection of Publications and Artifacts, 1937/19597
- Ladies of the Maccabees, Progressive Hive No. 8, Morgantown, Papers, 1907/19462
- Ladwig Family Papers, 1870/195912
- Lady Nancy Astor Papers, 1927/19562
- Laila W. Pearsall Personal Papers (SC-10)1
- Laine family papers, 1772/19617
- Land Grants, 1749/19851
- Land Records of the MVLA, 1858/20067
- Land Surveys, 1815/19431
- Landmarks Society of Alexandria, Virginia Collection (MS079), 1934/19762
- Lane Carlson papers, 1937/197210