- L. C. Angle, Jr., Collection, 1860/20016
- L. S. Rhodes & Sons Papers, 1886/192310
- L.J. Forman Papers, 1873/19344
- L.J. Forman Papers, 1894/19311
- Ladies of the Maccabees, Progressive Hive No. 8, Morgantown, Papers, 1907/19462
- Ladwig Family Papers, 1870/195921
- Laine family papers, 1772/19618
- Lambert-Sheetz Family Papers, 1818/19071
- Land Grants, 1749/19851
- Land Papers Miscellaneous, 1803/19331
- Land Records of the MVLA, 1858/20062
- Land Surveys, 1815/19431
- Landon Family Papers, 1877/19263
- Lantz Family Papers, 1814/19214
- Larkin family photograph collection2