- McCowan, Samuel M.1
- Moon, Carl, 1878-19481
- Morgan, J. Pierpont (John Pierpont), 1837-19131
- Moses, Henry, 1782?-1870, printmaker1
- Moxon, J. (James)1
- Mucha, Alphonse Marie, 1860-19391
- Murrow, J. S. (Joseph Samuel)1
- N. Orr Co1
- Northwestern Photographic Co.1
- O'Brien, R1
- Palmer, F. (Fanny), 1812-1876, artist1
- R. B., 1632?-1725?1
- Ranney, William Tylee, 1813-1857, artist1
- Reed and Wallace1
- Remington, Frederic, 1861-1909, artist1
- Ridinger, Henry, 1851-19381
- Roosevelt, Theodore, 1858-19191
- Rose & Hopkins1
- Rose, George L.1
- Royal Minor Theatre (Manchester, England)1
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