Authors: P
- Lissagaray 1838-1901
- Littlechild, Walter Poole -
- Littré, Emile 1801-1881
- Liu, E 1857-1909
- Livingstone, W. P. (William Pringle) 1864-1950
- Locke, David Ross 1833-1888
- Lock, F. P. -
- Lockhart, J. G. (John Gibson) 1794-1854
- Logan, India W. P. (Indiana Washington Peddicord) 1835-
- Longinus, active 1st century -
- Lopez, Pantaleón S. 1872-1912
- López y Planes, Vicente 1784-1856
- Lorain, P. (Paul) 1799-1861
- Loring, Katharine P. 1849-1943
- Lorrain, Jean 1855-1906
- Loti, Pierre 1850-1923
- Louise, Princess of Belgium 1858-1924
- Louisiana Purchase Exposition Commission -
- Louisville Free Public Library -
- Louwerse, Pieter 1840-1909
- Louÿs, Pierre 1870-1925
- Lovecraft, H. P. (Howard Phillips) 1890-1937
- Loving, Pierre 1893-
- Low, A. P. (Albert Peter) 1861-1942
- Lowe, Charles P. -
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