- Sams, Crawford F., author1
- Sappington, Emmett E., author1
- Sedgwick, W. T. (William Thompson), 1855-1921, author1
- Segner, Paul M., author1
- Shelley, Walter B. (Walter Brown), 1917-2009, author3
- Skaggs, Lois, author1
- Snyder, Howard E.4
- Stromquist, W. G., author1
- Swigert, Theodore C., author1