Recs if you like Mary Toft; or, The Rabbit Queen...

Fiction about hyperspecific stuff that'll get you lost in Wikipedia if you're not careful — the more niche the better. Suggestions welcome, but to make the cut, there MUST be a corresponding Wikipedia page!! Links in the comments to get you started.

Nonfiction about macabre and taboo subjects

Books with a rabbit on the cover, of course. Or a hare.