Best BDSM Books - Erotica and Education

I'm trying to work on a page of my favorite books that involve Domination and Submission, BDSM, and spanking fetish erotica. I would love suggestions as I'm compiling the list. The Marketplace Series by Laura Antoniou is a good example of the kind of erotic material I want to include, as would be favorite classics like Anne Rice's Beauty Trilogy. In another section, I want to add more academic and educational material. Let me know if you think of anything!