Damn, this book looks super awesome: Russian Criminal Tattoo Encyclopaedia. I’ll have to come back later and see if I can find any links online about this.

Also, this book totally rules, Picture Book of Devils, Demons and Witchcraft, from the ever-reliable Dover Books. My friend has it. It’s incredible. I must own a copy sometime soon. There’s some of the coolest illustrations in this book I’ve ever seen.