Books about Epistolary fiction (sorted alphabetically)
- Persialaisia kirjeitä (Finnish) baron de Charles de Secondat Montesquieu
- Polly the Pagan: Her Lost Love Letters Isabel Anderson
- Pomona's Travels Frank R. Stockton
- Radio mates Benjamin Witwer
- Setä Pitkäsääri (Finnish) Jean Webster
- Set in Silver C. N. Williamson and A. M. Williamson
- songe d'une femme: roman familier (French) Remy de Gourmont
- spokesman's secretary : Being the letters of Mame to Mom Upton Sinclair
- Stark Munro Letters Arthur Conan Doyle
- Stark Munro Letters Arthur Conan Doyle
- Susan Ernest Oldmeadow
- Sylph, Volume I and II Duchess of Devonshire Georgiana Spencer Cavendish
- Tabby Winston K. Marks
- Take It from Dad George Griswold Livermore
- There Is Sorrow on the Sea Gilbert Parker
- Through the Eye of the Needle: A Romance William Dean Howells
- Time Grabber Gordon R. Dickson
- Udo in England: Eine Reiseerzählung (German) Marie von Bunsen
- Untechnological Employment Ed M. Clinton
- Vadertje Langbeen (Dutch) Jean Webster
- Verena in the Midst: A Kind of a Story E. V. Lucas
- Visits of Elizabeth Elinor Glyn
- Whiskaboom Alan Arkin
- Wieland; Or, The Transformation: An American Tale Charles Brockden Brown
- Wings of Icarus: Being the Life of one Emilia Fletcher Laurence Alma-Tadema