Tattoo artist J.D. Crowe has produced a rather lengthy series of tattoo design books. Here's just a sampling of what is available to either meet your design needs, or inspire you towards that perfect design. Each book is spiral-bound, 20 pages of black and white line designs. If you've ever wondered what tattooists meant by the term "flash" was, this is it, and basically it's design source material.

tattoo art crosses
sun-moon tattoo art
Tribal Tattoo Volume Two