Creator
- Mason, M. C. B. (Madison Charles Butler), 1859-1915.1
- Mason, Nelson.1
- Mastin, Claudius H. (Claudius Henry), 1826-1898.1
- Mayhew, Augustus, 1826-1875.1
- Mayhew, Edward, 1813?-1868.1
- Mayhew, Henry, 1812-1887.1
- Mayo, A. D. (Amory Dwight), 1823-1907.1
- Mayson, Walter H. (Walter Henry), 1835-1904.1
- McClellan, George Marion, 1860-1934.1
- McDermott, Anthony W.1
- McDonald, William, 1834-1898.1
- McDuffie, S. Douglass.1
- McGuire, George Alexander, 1866-1934.1
- McHenry, George.1
- McKay, Claude, 1890-1948.1
- McMaster, Fitz William, 1826-1899.1
- Meade, William, 1789-1862.1
- Means, Sterling M.1
- Merriman, Henry Seton, 1862-1903.1
- Metcalf, Edwin S. (Edwin Styles), 1823-1894.1