What are everybody's recommendations for good accurate sex-positive non-fiction about sex?
For example, I love "The New Good Vibrations Guide To Sex" by Cathy Winks and Anne Semans (it's my "If you only ever buy one book about sex, make it this one" recommendation). It's friendly, informative, and, unlike most sex books, doesn't assume that you're necessarily straight/partnered/able-bodied etc. And throughout, it emphasizes communication and the fact that different people like different things, instead of promoting a "one-size-fits-all" version of sex.
What are other people's favourites? What books have helped make you "sexually literate"?