Mostly Read: Inside the Tattoo Circus by Kristian Misser, 2009, 9780764331459.
Lots of great illustrations of different tattoos by a lot of different artists. Some of the artists have exceptional skill.
What most impresses me about this kind of artwork is that is no good way to fix a mistake. You can try and color over it but the ones I have seen that done to - very few to be sure - just don't look as good.
Misser is Danish and writes for European tattoo mags. He interviewed several different artists and all the photos are full color. I liked the nude ones the best. Pages 51, 43, 41, 38, 39, 191, 192.