A Not-So-Little Bouldering Guide of Yosemite by DrTopo.com

DrTopo.com is no longer live, I'll save you the effort. 

This is a pamphlet-style guide to a few bouldering areas in Yosemite Valley, including Camp 4, the Cathedral Boulders, and the Ahwanee Boulders.

23 pages, b&w with many computer-made maps.