User:SOTO/Forum Archive/The Panopticon/@comment-33695797-20200828040941/@comment-33695797-20200829071228

There's another thing I think should be mentioned. There are some reference books that, while not presented as an in—universe document, are written entirely from an in–universe POV. Two I definitely know fit this case are Doctor Who Character Encyclopedia and The Visual Dictionary, and any updated/combined versions of them. (There are probably others.) Although I don't think these provide that much new information anyway as they're basically recaps of episodes, they still present solely DWU info and nothing on the show. Both could ostensibly be in-universe documents, especially the former as it poses itself as a collection of "data files", but they don't present themselves as such outside of their perspective.