The Epistolary Novel is written as a series of letters from one or more of the characters. It could be all from just one character, an ongoing correspondence between two characters or letters from a variety of characters addressed to a number of different people. Later on, books evolved to start using other devices than just letters. This gave rise to the Scrapbook Story format, of which this can be considered a subtrope. See also The Rashomon, Literary Agent Hypothesis (authors will occasionally credit themselves as "compiler" or similar). Examples of Epistolary Novel include: