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Subjects
- Macdonald, James, 1803-1849.1
- Maclure, William, 1763-1840.1
- Mance, Jeanne, 1606-1673.1
- Mann, Horace, 1796-1859.1
- Manning, Henry Edward, 1808-1892.1
- Manson, Otis Frederick, 1822-1888.2
- Marcy, Henry O. (Henry Orlando), 1837-1924.1
- Marquette, Jacques, 1637-1675.1
- Marvin, George, 1798-1874.1
- Maryland2
- Mason, Theodore L. (Theodore Lewis), 1803-1882.1
- Massachusetts18
- Massachusetts General Hospital.1
- Materia Medica1
- Mathematics2
- McBrayer, Jno. Allen (John Allen), 1817-1850.1
- McClellan, George B. (George Brinton), 1826-1885.1
- McClellan, George, 1796-1847.1
- McClellan, Samuel, 1787-1855.1
- McDowell, Ephraim, 1771-1830.4