Books in Browsing: Gender & Sexuality Studies (sorted alphabetically)
- Sex and Society: Studies in the Social Psychology of Sex William Isaac Thomas
- Sex & Character Otto Weininger
- Sexes in Science and History Eliza Burt Gamble
- Sex in Education; or, A Fair Chance for Girls Edward H. Clarke
- Sex-Love, and Its Place in a Free Society Edward Carpenter
- Sexual ethics Auguste Forel
- Sexual Life of Our Time in Its Relations to Modern Civilization Iwan Bloch
- Sexual Life of Primitive People Hans Fehlinger
- Sexual Life of the Child Albert Moll
- Sexueele Zeden in Woord en Beeld: De Humor in het Geslachtsleven (Dutch) D. Ph. van Vloten Elderinck
- Sexueele Zeden in Woord en Beeld: Liefde en Zinnelijkheid (Dutch) D. Ph. van Vloten Elderinck
- Sex Worship and Symbolism of Primitive Races: An Interpretation Sanger Brown
- Shadow of Life Anne Douglas Sedgwick
- Short History of Women's Rights Eugene A. Hecker
- Sins of the Cities of the Plain; or, The Recollections of a Mary-Ann Jack Saul
- Six modern women: Psychological sketches Laura Marholm
- Social-Democracy and Woman Suffrage Klara Zetkin
- Social Emergency: Studies in Sex Hygiene and Morals
- Sodoma e Gomorra: Cronistoria del Libertinaggio attraverso i secoli ed il mondo (Italian) Docteur Jaf
- Solteronas (Spanish) Claude Mancey
- Some Eminent Women of Our Times: Short Biographical Sketches Dame Millicent Garrett Fawcett
- Some Phases of Sexual Morality and Church Discipline in Colonial New England Charles Francis Adams
- Some Reflections Upon Marriage. Mary Astell
- Spinster Book Myrtle Reed
- Spinster Book Myrtle Reed