Northern California is bow wood heaven. I can get Ash, Three kinds if oak, plum, juniper, locust, yew, a bunch of maple including Vine Maple, Ocean Spray,Eucalyptus, Redbud, Cascara, hazle and dogwood within an hours drive, not to mention all the ornamentals from landscaping pruning.
Check local tree services, and landscapers. Better yet get out on all that Forest Service land we got and find some of your own. Good luck!
Gabe