Sequoia and Kings Canyon National Parks (47050 Generals Hwy., (Rte. 198), Three Rivers, CA, 93271–9651. 559/565–3341. www.nps.gov/seki/planyourvisit/things2know.htm.)
Delaware North Park Services. This concessionaire operates most of the lodgings and visitor services in Sequoia and Kings Canyon. 559/565–4070. www.visitsequoia.com.
Sequoia Natural History Association. The association operates Crystal Cave and the Pear Lake Ski Hut, publishes the parks' newspaper, provides educational materials, and conducts daytime and evening programs. 559/565–3759. www.sequoiahistory.org.