Logbook

In the pre-internet dark age, there was a subculture of folks who would get their hands on books and pass them around and encourage people to read them for free, rather than buying their own copies. Much like today's ebook pirates, in terms of the what they did (with one or two minor differences). There was a closely-related subculture who would actually sell copies of books without paying the authors a penny in royalties, too.

We have a technical term for such people: we call them "librarians" and "second-hand bookstore owners".