Authors: 1923
- Nicoll, W. Robertson (William Robertson), Sir 1851-1923
- Nion, François de 1854-1923
- Nisbet, Hume 1849-1923
- Nordau, Max Simon 1849-1923
- Nordmann, Petrus 1858-1923
- Olterdissen, Alphonse 1865-1923
- Panton, J. E. (Jane Ellen) 1847-1923
- Pareto, Vilfredo 1848-1923
- Parrish, Randall 1858-1923
- Peard, Frances Mary 1835-1923
- Philippoteaux, Paul 1846-1923
- Phipps, Ramsay Weston 1838-1923
- Phoutrides, Aristides E. (Aristides Evangelus) 1887-1923
- Picón, Jacinto Octavio 1852-1923
- Pidgin, Charles Felton 1844-1923
- Poll, C. N. van de (Cornelis Nanning) 1860-1923
- Pollen, John 1848-1923
- Radiguet, Raymond 1903-1923
- Rákosi, Viktor 1860-1923
- Raymond, W. O. (William Odber) 1853-1923
- Reich, Jacques 1852-1923
- Reicke, Georg 1863-1923
- Reinsberg, Mark 1923-1981
- Reinsch, Paul S. (Paul Samuel) 1869-1923
- Rhoades, James 1841-1923
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