I've always been intrigued that in cultural discussions and in libraries, we refer to fiction and non fiction - not fact and non-fact. This is an interesting exploration of these distinctions from a philosophical perspective.
What grounds the nonfiction/fiction distinction is not that the former is based on truth or facticity per se, but that the former contributes to how we see the world insofar as it organises the kinds of truths that we care enough about to read and write about. The Montgomery County Commission didn’t initiate a systematic audit of all nonfiction books that might include false or misleading information. Rather, they targeted a book whose claim to truth practically interfered with their understandings of themselves and the country.