00590cam a2200193 4500 330770050 TxAuBib 19910920120000.0 |||||||||||||||||||||||||||||||||||und|u 74001565 TxAuBib National Geographic Society (U.S.) The Pacific Crest Trail / by William R. Gray; photographed by Sam Abell. National Geographic Society. 19910920. Hiking Pacific States. Pacific Crest Trail. Gray, William R.