I'm a bit puzzled, and it might be just a random coincidence, but a recent question about a book did get an almost instant downvote.
Given, there is no close request, but to me the question does not fulfil the required 'unclear/missing research/not useful' criteria. It seems well written, with a good number of details, even including a picture of he image the author remembers from that book's cover. Over all, way better supported then many other 'identify-something' questions.
And yes, it's only one downvote, but I couldn't halt to think that someone doesn't like a book being searched and since that topic hasn't come up so far, I'd like to ask:
Do we welcome book questions?
(Them being within the usual margins - like related to old computers and within historic context - of course)
We seem to accept a lot of quite vague questions even about arcade machines, so I would think book questions, at least when written that clearly, should have their place.
[And yes, I know, there are zillions of books, like "how to type in a number in an Excel sheet", one can rightful forget about and should not be remembered at all, but that's not the point]