Borrego Springs Chamber of Commerce (786 Palm Canyon Dr., 92004-0420. 760/767-5555 or 800/559-5524. www.borregosprings.org). Joshua Tree National Park (74-485 National Park Dr., Twentynine Palms, 92277. 760/367-5500. www.nps.gov/jotr). Palm Springs Desert Resorts Convention and Visitors Authority (70-100 Hwy. 111, Rancho Mirage, 92270. 760/770-9000 or 800/967-3767. www.palmspringsusa.com). Palm Springs Visitor Information Center (2901 N. Palm Canyon Dr., 92262. 800/347-7746. www.palm-springs.org). Twentynine Chamber and Visitor Bureau (73666 Civic Center Dr., Suite D, Twentynine Palms, 92277. 760/367-3445. www.visit29.org).