Authors: 1919
- Moorman, F. W. (Frederic William) 1872-1919
- Morel, Emile 1873-1919
- Moreno, Bento 1848-1919
- Moreno, Francisco Pascasio 1852-1919
- Morice, Charles 1861-1919
- Multhauf, Robert P. 1919-2004
- Neumann, Wilhelm 1849-1919
- Neville, Emily 1919-1997
- Niemann, August 1839-1919
- O'Brien, Cyril J. 1919-2011
- Oilliamson, Jeanne de Polignac, comtesse d' 1861-1919
- Oppenheim, L. (Lassa) 1858-1919
- Osler, William, Sir 1849-1919
- Pakiser, L. C. (Louis Charles) 1919-
- Palma, Ricardo 1833-1919
- Palmén, J. A. (Johan Axel) 1845-1919
- Payne, William Morton 1858-1919
- Pears, Edwin 1835-1919
- Peele, W. J. (William Joseph) 1855-1919
- Petherick, Horace 1839-1919
- Pfeiffer, Charles F. 1919-1976
- Pickering, Edward C. (Edward Charles) 1846-1919
- Pirsson, Louis V. (Louis Valentine) 1860-1919
- Pohl, Frederik 1919-2013
- Pollen, Maria Margaret -1919
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