Authors: 1865
- Schillings, C. G. (Carl Georg) 1865-1921
- Schirmacher, Käthe 1865-1930
- Schulz, Bruno 1865-1932
- Schulz, Wilhelm 1865-1952
- Schwindrazheim, Oskar 1865-1952
- Scott, Martin J. (Martin Jerome) 1865-1964
- Sears, Joseph Hamblen 1865-1946
- Semmelweis, Ignác Fülöp 1818-1865
- Sewell, James Witt 1865-1955
- Shaw, William Arthur 1865-1943
- Sheard, Virna 1865-1943
- Shiel, M. P. (Matthew Phipps) 1865-1947
- Shirayamadani, Kataro 1865-1948
- Shirley, Ralph 1865-1946
- Shiukichi, Shigemi 1865-1928
- Shore, W. Teignmouth (William Teignmouth) 1865-1932
- Sigourney, L. H. (Lydia Howard) 1791-1865
- Simpson, Georgiana Rose 1865-1944
- Simpson, Percy 1865-1962
- Singleton, Esther 1865-1930
- Sisson, Septimus 1865-1924
- Slosson, Edwin E. (Edwin Emery) 1865-1929
- Smith, F. Clifford (Frank Clifford) 1865-1937
- Smith, Hugh M. (Hugh McCormick) 1865-1941
- Smith, Logan Pearsall 1865-1946
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