Amador County Chamber of Commerce (125 Peek St., Jackson, 95642. 209/223-0350. www.amadorcountychamber.com). Davis Chamber of Commerce (130 G St., Davis, 95616. 530/756-5160. www.davischamber.com). El Dorado County Chamber of Commerce (542 Main St., Placerville, 95667. 530/621-5885 or 800/457-6279. www.eldoradocounty.org). Grass Valley/Nevada County Chamber of Commerce (248 Mill St., Grass Valley, 95945. 530/273-4667 or 800/655-4667. www.grassvalleychamber.com). Mariposa County Visitors Bureau (5158 Hwy. 140, Mariposa, 95338. 209/966-7081 or 800/208-2434. mariposa.yosemite.net/visitor). Nevada City Chamber of Commerce (132 Main St., Nevada City, 95945. 530/265-2692). Sacramento Convention and Visitors Bureau (1303 J St., Suite 600, Sacramento, 95814. 916/264-7777. www.sacramentocvb.org). Tuolumne County Visitors Bureau (542 Stockton St., Sonora, 95370. 209/533-4420 or 800/446-1333. www.thegreatunfenced.com). Woodland Chamber of Commerce (307 1st St., Woodland, 95695. 530/662-7327 or 888/843-2636. www.woodlandchamber.org).