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- Lefebure, Victor, author1
- Leonardo, da Vinci, 1452-1519, author1
- Levere, Chester, author1
- Levine, Israel, author1
- Levinson, Abraham, 1888-1955, author1
- Lillie, Frank Rattray, 1870-1947, author1
- Linville, Henry R. (Henry Richardson), 1866-1941, author1
- Lippitt, Louisa C. (Louisa Christiana), author1
- Loeb, Leo, 1869-1959, author1
- Lorand, Arnold, author1
- Luckett, George Sparr, 1886- author1
- Lust, Benedict, 1872-19451
- Lyon, B. B. Vincent (Bethuel Boyd Vincent), 1880-1953, author1
- Macdonald, V. May, author1
- Macfarlane, Catharine, 1877-1969, author1
- Magagnoli, Giuseppe, 1878-1933, artist.1
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- Marie Paula, Sister, 1867- author1
- Mason, Howard, H., author1