Names
- Leavitt & Allen1
- Lee, Alfred, 1807-1887.1
- Lee, Henry W. (Henry Washington), 1815-1874.1
- Leighton, Caroline C.1
- London Stereoscopic Company.1
- Loquist, N. E.1
- Louis Napoléon, Prince Impérial of the French, 1856-1879.1
- Mansfield, Joseph K. F. (Joseph King Fenno), 1803-1862.1
- Marsh, Charles Burr, 1861-1941.1
- Mary, Princess, Duchess of Teck, 1833-1897.1
- Maull & Co.1
- Maull & Polyblank.1
- Mayall, J. E. (John Jabez Edwin), 1813-19011
- Mayer & Pierson (Paris, France)1
- Mayers, John Perkins, 1818?-1877.1
- McClellan, George B. (George Brinton), 1826-1885.1
- McDowell, Irvin, 1818-1885.1
- McIlvaine, Charles Pettit, 1799-1873.1
- Merritt, Anna Lea, 1844-1930.1
- Miller, Elizabeth Smith, 1822-1911.1