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Authors
- Lenzmann, Richard, 1856-1927, author1
- Leo-Wolf, Carl G., 1868-, author1
- León, Nicolás, 1859-1929 author1
- Levere, Chester.1
- Levy, Robert L. (Robert Louis), 1888-1
- Lewis, Frederic T. (Frederic Thomas), 1875-1951, author1
- Lewis, LeRoy, M.D., author1
- Leyro Díaz, Jorge, author1
- Léri, André, 1875-1930 author1
- Lévi, Léopold, 1868-1933, author1
- Liberty Mutual Insurance Company, author, issuing body.1
- Library of the Surgeon-General's Office (U.S.)3
- Lieberthal, Robert H., author1
- Life Extension Institute, author.1
- Lillie, Frank Rattray, 1870-1947 author1
- Lima, Aloysio de Paiva, author1
- Lima, Custodio Angelo de, author1
- Lima, Erasmo José da Cunha, author1
- Lima, Hermeto, 1875-1947 author1
- Lima, Hisbello de Andrade, author1