Authors: 1950
- Root, Robert K. (Robert Kilburn) 1877-1950
- Roseland, Harry 1866-1950
- Rosenbaum, S. (Simon) 1877-1950
- Ross, Charles G. (Charles Griffith) 1885-1950
- Rouse, W. H. D. (William Henry Denham) 1863-1950
- Sabatini, Rafael 1875-1950
- Safroni-Middleton, A. (Arnold) 1873-1950
- Sampson, George 1873-1950
- Samuel, Horace Barnett 1883-1950
- Sandre, Thierry 1890-1950
- Sarcey, Yvonne 1869-1950
- Schaeffer, Albrecht 1885-1950
- Scharten, C. Th. (Carel Theodorus) 1878-1950
- Schmidt, Max 1874-1950
- Schöpflin, Aladár 1872-1950
- Scoville, Samuel 1872-1950
- Seaman, Augusta Huiell 1879-1950
- Seton, Julia 1862-1950
- Seymour, St. John D. (St. John Drelincourt) 1880-1950
- Shaw, Bernard 1856-1950
- Smith, Joseph S. (Joseph Shuter) 1893-1950
- Smuts, Jan Christiaan 1870-1950
- Sparre, Erik 1871-1950
- Spears, Raymond S. (Raymond Smiley) 1876-1950
- Speck, Frank G. (Frank Gouldsmith) 1881-1950
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