Harvard University's libraries own at least one book bound in human skin, they allow. Arsène Houssaye's Des destinées de l'ame underwent a series of forensic tests, and the conclusion was anthropodermic bibliopegy:
“The analytical data, taken together with the provenance of Des destinées de l’ame, make it very unlikely that the source could be other than human...”
This note helps clarify the story.
Here's the book's front cover:
Such fine texture. What a surface! Sometimes beauty is skin deep.
(thanks to Jesse Walker, Steven Kaye, and other Infocult ghouls)