Maximum Black is a collection of some cool character illustrations from Timothy Bradstreet. This book was published way back in 1998.
The amazing use of black ink and contrast makes each portrait really striking. And there are plenty of details and textures in every piece. As he uses models for reference, there's a very strong sense of form, not to mention photo realism (in black and white).
Most of the illustrations are in black and white, with a few pages in colour.