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Authors
- Leonard, L. W. (Levi Washburn), 1790?-18641
- Leonard, W. E. (William Edwin), 1855-1935 author1
- Leroy, Louis, 1874- author1
- Levere, Chester, author1
- Levi, Jeffrey, PhD author1
- Levi, Jeffrey, author2
- Levin, Max, author1
- Levy, Robert, 1864-19451
- Lewis, Dio, 1823-1886 author1
- Lewis, John B. (John Benjamin), 1832-19141
- Libbey, H. W. (Hosea W.)1
- Library of Congress, compiler.1
- Library of Congress. Legislative Reference Service, author.2
- Library of Congress. Legislative Reference Service, compiler, issuing body.2
- Library of the Surgeon-General's Office (U.S.)61
- Lieberman, Dara Alpert, author1
- Lilienthal, Samuel, 1815-18911
- Lindley, Walter, 1852-19221
- Lindsley, Charles A. (Charles Augustus), 1826-19061
- Linville, Henry R. (Henry Richardson), 1866-1941 author1