Hello, please suggest me a book or books, treatise or directory that was or is taboo or have a nsfw elements in it. (For example – Kamasutra, The Anarchist Cookbook, etc.)

I do a uni project, make series of same topic or “mood” books and then make covers of them.
I was thinking about books that you normally won’t read in public, or read it under blanket, that has some taboo topics; like sex, weapons, human behavior, paranormal things, etc.

P.S. By that I don’t mean books like “Lolita” it’s a novel with nsfw elements, or “Mein Kampf”.

Thanks in advance. Sorry for the broken English

by Wojciech1woooo0