- Miss Dromgoole Ham1
- Mitchell, S. Augustus (Samuel Augustus) 1792-18681
- Mitchell, S. Augustus (Samuel Augustus), 1792-1868 (Publisher)1
- Mittwede, Steven K. 1959-1
- Monteith, James1
- Morse, Sidney E. (Sidney Edwards) 1794-18711
- Morse, Sidney E. (Sidney Edwards), 1794-1871 (Compiler)1
- Moseley, Edward, 1682-17491
- Mrs. F.D.Slaght, Jr.1
- Murray and Flood (Firm) (Engineers)1
- Murray, George, -1822 (Engraver)1
- Mùˆnster, Sebastian, 1489-15521
- Nancy Hanley1
- Ortelius, Abraham, 1527-15981
- Ortelius, Abraham, 1527-1598 (Cartographer) (Geographer)1
- Parker, J. R. [batch 13 file 678, Parker, John R. (1835-1911)]1
- Parker, John R., active 1858-19111
- Peirce, Benjamin, 1809-18801
- Perrine, C. O. (Charles O.)1
- Perry, George T.1