Alternative terms: reportage, facts, discursive writing, eyewitness description (implying no mediation by writer)
Nonfiction genres (in descending order of interest to literary studies)
personal narratives, accounts, or relations
monograph (book-length essay)
books of quotations
Oxford English Dictionary. non-fiction. 1.a. Prose writing other than fiction, such as history, biography, and reference works, esp. that which is concerned with the narrative depiction of factual events; the genre comprising this.