Bridgeport Chamber of Commerce (Box 541, Bridgeport, 93517. 760/932-7500. www.bridgeportcalifornia.com). DNC Parks & Resorts at Yosemite (Box 578, Yosemite National Park, 95389. 209/372-1000. www.yosemitepark.com). Lee Vining Chamber of Commerce (Box 29, Lee Vining, 93541. 760/647-6629. www.monolake.org/chamber). Mammoth Lakes Visitors Bureau (Along Hwy. 203, Main St., near Sawmill Cutoff Rd., Box 48, Mammoth Lakes, 93546. 760/934-2712 or 888/466-2666. www.visitmammoth.com). Mono Lake (Box 49, Lee Vining, 93541. 760/647-3044. www.monolake.org). Sequoia-Kings Canyon National Park (Three Rivers, 93271. 559/565-3341 or 559/565-3134. www.nps.gov/seki). Yosemite National Park (Information Office, Box 577, Yosemite National Park, 95389. 209/372-0200 or 209/372-0264. www.nps.gov/yose). Yosemite Sierra Visitors Bureau (41969 Hwy. 41, Box 1998, Oakhurst, 93644. 559/683-4636. www.yosemitethisyear.com).