Hiking the Mojave Desert
by Michel Digonnet

Very thorough guide to hikes with fascinating natural and cultural information as well. We love his Death Valley books and this newest book is just as great.

Hiking Mojave National Preserve
Falcon Guides

Nice overview of some of the most popular hikes - the mileages in the directions to the trailheads are often off by several tenths of a mile though.

Mojave National Preserve Map
National Geographic Trails Illustrated

Must have map if you're going to drive the lesser used 4WD roads