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- Mallet, John William, author2
- Mallo, Pedro, -18993
- Mallo, Pedro, -1899, author1
- Manet, Edouard, 1832-1883, artist1
- Manget, Et. A. (Etienne Auguste), -1885, author1
- Manhattan Eye and Ear Hospital. Board of Directors, issuing body.1
- Mann, Edward C. (Edward Cox), 1850-1908, author2
- Marcondes, José Antonio de Oliveira.1
- Marcondes, José Vieira.1
- Marcy, Henry O. (Henry Orlando), 1837-19242
- Marks, A. A. (Amasa Abraham)2
- Marques, Augusto de Souza.1
- Marsden, J. H. (John Hatton), 1803-18831
- Marsden, William, 1796-18671
- Marsh, Elias J. (Elias Joseph), 1835-1908 author1
- Marsh, Elias J. (Elias Joseph), 1835-1908, author2
- Marsh, Othniel Charles, 1831-18991
- Marsh, Othniel Charles, 1831-1899, author2
- Marsh, Sylvester.1