00576cam a2200169 4500 100347220 TxAuBib 20070420120000.0 110306s2011||||||||||||||||||||||||eng|u 35268 Project Gutenberg PGUSA eng TxAuBib Bass, William Wallace. Adventures in the Canyons of the Colorado By two of its earliest explorers [Gutenberg] / by William Wallace, 1848-1933 Bass. Project Gutenberg, 2011. Freely available. Electronic text. http://www.gutenberg.org/license Rights