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- League of Women Voters (U.S.)2
- League of Women Voters of Cranford2
- Leclerc, Jean, 1560-1621. Théatre géographique du Royaume de France2
- Lee, Thomas Jefferson, 1808-18912
- Lehr, J.D.2
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- Linant de Bellefonds, L.-M.-A. (Louis Maurice Adolphe), 1799-18832
- Lindsay, John F. (John Francis), 1941-20082
- Lipman, Louis2
- Little, R. L. (Geologist)2
- Lloyd, James T.2
- Logerot, Auguste2
- London Geographical Institute2
- Lotter, Matthäus Albrecht, 1741-18102
- Lucini, Antonio Francesco, 1605-2
- Lusardi, B.A2
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- Maclear & Co.2
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