Novels in letters

Diary fiction.

GSAFD, 2000 (Epistolary fiction. Use for novels written in the form of a series of letters. UF Epistolary novels; Fiction, Epistolary; Novels in letters)
LCSH (Epistolary fiction. Here are entered works of fiction written wholly or partially in the form of letters, telegrams, electronic mail messages, instant messages, etc. Works of fiction written in diary form are entered under Diary fiction. UF Epistolary novels; Epistolary short stories; Epistolary stories; Novels, Epistolary; Novels in letters; Short stories, Epistolary. BT Fiction.)
Baldick, C. Oxford dictionary of literary terms, c2008 (epistolary novel: a novel written in the form of a series of letters exchanged among the characters of the story, with extracts from their journals sometimes included.)

Fiction written wholly or partially in the form of letters, telegrams, electronic mail messages, instant messages, etc. For fiction written in diary form see