John McKinney's day hiking guide offers a surprisingly comprehensive look at the many hiking trails throughout Southern California.
From hiking trails to technical climbs, Steve Porcella and Cameron Burns have assembled 183 routes on California's 14 'fourteeners'—including Mts. Shasta and Whitney.
If you're considering a Shasta climb, try Andy Selters and Michael Zanger's excellent guidebook.
Comprehensive collection of routes, history, geology, and more.
John Moynier's guidebook is rich with technical Sierra climbs.
Not always the most detailed routes, but fantastic variety.