- Lacombe, Dr1
- Ladd, George Trumbull, 1842-1921, author1
- Ladies' Health Protective Association (New York, N.Y.), author.2
- Ladies' Physiological Institute (Boston, Mass.)1
- Ladies' Union Association of Philadelphia, issuing body.1
- Laennec, Mériadec.1
- Laennec, R. T. H. (René Théophile Hyacinthe), 1781-18264
- Laffont, Marc.1
- Lago, Joaquim Mariano Bayma do.1
- Laidlaw, A. H. (Alexander Hamilton), 1828-19081
- Laidley, L. H. (Leonidas H.), 1844-19081
- Laidley, L. H. (Leonidas H.), 1844-1908, author1
- Lake, Richard, 1861-1949, author1
- Lallemand, F. (François), 1790-1853?5
- Lamb, J. Melvin (John Melvin), 1862-1912 author1
- Lamb, John F. (John Fergusson), 1791-18691
- Lamb, John.1
- Lambert, Alexander, 1861-1939 author1
- Lambert, John, 1828-19111
- Lambert, John, 1828-1911 author1