Contact Crater Lake National Park, P.O. Box 7, Crater Lake, OR 97604 (tel. 541/594-2211; fax 541/594-2299; www.nps.gov/crla) for the free park guide, Crater Lake Reflections, which has a good summary of most of the park's trails, accommodations, and seasons. You can obtain a catalog of books and maps about the park from the Crater Lake Natural History Association, P.O. Box 157, Crater Lake, OR 97604 (tel. 541/594-2211, ext. 499; www.nps.gov/crla/nhao.htm).
The park has two visitor centers. Steel Information Center, south of the lake off Ore. 62, is open daily year-round and contains park headquarters. You can talk to a ranger and find out about local weather forecasts and general park information, purchase books and maps, and watch an 18-minute film. The Rim Village Visitor Center, along the southern edge of the caldera rim, is open daily from June through September. Here you can obtain general park information, and books, videos, and maps. In addition, there is a short, paved trail leading from the visitor center to the Sinnott Overlook, which offers a fine view of the lake and several interpretive exhibits.