Creator
- Metropolitan Photo (Boston, Mass.)1
- Metropolitan Photo Service (New York, N.Y.)1
- Metzger Zunft Basel1
- Meyer.1
- Micheaux, Oscar, 1884-1951.1
- Michelbacher, M. J. (Maximilian J.), 1811?-1879.1
- Mickle, William English, 1846-19201
- Middletown Post Card Co. (Middletown, Ohio)1
- Miie, F.1
- Mila, J. E.1
- Miles, Earnest E.1
- Miles, J. J.1
- Miles, James Warley, 1818-1875.1
- Miles, L. H.1
- Miles, W. E1
- Miles, W. E.1
- Miley, Michael, 1841-19181
- Milke, O.1
- Mill's Artists Bureau.1
- Millar & Lang, Ltd.1