Creator
- Logan, John Henry.1
- Longacre, J. B.1
- Longrace, J. B.1
- Mackintosh, Mary1
- Mahone, William, 1826-18951
- Manning, Samuel1
- Mars, James, 1790-1
- Martyn1
- Massachusetts Prison Association.1
- Mastin, Claudius H. (Claudius Henry), 1826-1898.1
- Maxwell, G. Troup1
- Mayhew, Edward, 1813?-1868.1
- McKinney, David1
- McTyeire, Holland Nimmons, 1824-18891
- Mead, Edwin D. (Edwin Doak), 1849-1937.1
- Meade Bros.1
- Metcalf, Edwin S. (Edwin Styles), 1823-1894.1
- Miley, Michael, 1841-19181
- Monroe, J. Albert (John Albert), 1836-1891.1
- Mora, José Maria1