A site termed Library Smut has this by way of introduction:
By “library smut” I am in no way referring to the photo books on native peoples, or the illustrated health manuals, or any of the other volumes which, in your childhood, you lurked about the library aisle to find with the sole purpose of sneaking guilty glances at naked bodies. Nor am I referring to the “risqué” novels by Miller, Cleland, Réage, or Lawrence you leafed impatiently through as a teenager. No. What I’m talking about here is the full-frontal objectification of the library itself. Oh yeah.
The gorgeous photos are from a book by Candida Hofer.