| Land Claims in the District of Kaskaskia, 1811 | Complete |
| Leffel, John C. History of Posey County, Indiana. Chicago: Standard Publ. Co., 1913 | Complete |
| Lemmon, D. F. The ancient capital of the state of Indiana, Corydon, Harrison county. New Albany, Ind., Ledger co., 1891 | Complete |
| Lewis, Samuel. Maryland. Philadelphia: J. Conrad, 1804 | Complete |
| Lewis, Samuel. Maryland. Philadelphia: J. Conrad, 1804 | Complete |
| Liste des habitans francais du village des kaskaskias, 1787 | Complete |
| Louisiana (district) | References Only |
| Louisiana (territory) | References Only |
