- The Sign at Six (English) by White, Stewart Edward
- Sign Language Among North American Indians Compared With That Among Other Peoples And Deaf-Mutes - First Annual Report of the Bureau of Ethnology to the - Secretary of the Smithsonian Institution, 1879-1880, - Government Printing Office, Washington, 1881, pages 263-552 (English) by Mallery, Garrick
- The Sign of the Four (English) by Doyle, Arthur Conan, Sir
- The Sign of the Four (English) by Doyle, Arthur Conan, Sir
- The Sign of the Four (English) by Doyle, Arthur Conan, Sir
- The Sign of the Red Cross (English) by Everett-Green, Evelyn
- Signora Fantastici (English) by Morlock, Frank J.
- Signora Fantastici (English) by Staël, Madame de (Anne-Louise-Germaine)
- Signs of Change (English) by Morris, William
- The Siksha-Patri of the Swami-Narayana Sect (English) by Monier-Williams, Monier, Sir
- Silas Marner (English) by Eliot, George
- Silas Marner (English) by Eliot, George
- Silence En Otage (French) by Bertrand, Huguette
- The Silence: What It Is and How To Use It (English) by Bush, David V.
- The Silent Bullet (English) by Reeve, Arthur B. (Arthur Benjamin)
- The Silent House (English) by Hume, Fergus
- The Silent Isle (English) by Benson, Arthur Christopher
- The Silent Places (English) by White, Stewart Edward
- The Silk-Hat Soldier - And Other Poems in War Time (English) by Le Gallienne, Richard
- Sillankorvan emäntä - Nelinäytöksinen näytelmä - Tapaus länsisuomalaisessa - talonpoikaissuvussa 1860-1870-luvulla (Finnish) by Kilpi, Hilja
- The Silly Syclopedia (English) by Lott, Noah [pseud.]
- Silmänkääntäjä - eli Jussi Oluvisen matka Hölmölään; ilveilys 2:ssa näytöksessä (Finnish) by Hannikainen, Pietari
- The Silverado Squatters (English) by Stevenson, Robert Louis
- The Silver Box (English) by Galsworthy, John
- The Silver Crown - Another Book of Fables (English) by Richards, Laura Elizabeth Howe
- The Silver Horde (English) by Beach, Rex Ellingwood
- Simon (French) by Sand, George
- Simon Bolivar, the Liberator (English) by Sherwell, Guillermo A.
- Simon Called Peter (English) by Keable, Robert
- Simone - Histoire d'une jeune fille moderne (French) by Tissot, Victor
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