- Lea, Pryor, 1794-18791
- Lee, James, 1818-18661
- Leidy, Joseph, 1823-18911
- Lindsly, Harvey, 1804-18891
- Linton, M. L. (Moses L.) 1808-18721
- Lizars, John, 1787?-18601
- Logan, Joseph P. (Joseph Payne), 1820-18911
- Ludlam, R. (Reuben), 1831-18991
- Lyman, George, Rev1