- London Topographical Society1
- Long, G. (George)1
- Longyear, John Munro, 1850-1922, compiler1
- Loon, J. van, approximately 1611-1686.1
- Lotter, Georg Friedrich1
- Lotter, Matthäus Albrecht, 1741-18101
- Low, A. P. (Albert Peter), 1861-19421
- Lucas, Fielding, Jr., 1781-18541
- Lyman, Benjamin Smith, 1835-19201
- Lyon, Lucius, 1800-18511
- M.M. Dickson & Co.1
- MacCoun, Townsend, 1845-19321
- Mackenzie, Alexander, 1764-18201
- Macomb, J. N. (John N.), 1810 or 1811-18891
- Macomb, J. N. (John N.), 1810 or 1811-1889, topographer1
- Magini, Giovanni Antonio, 1555-16171
- Magra, Perkins.1
- Maillart, Jeanne C., fl. 1799-1807, engraver.1
- Major, Sieur, engraver1
- Mann, T. A.1