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Publication Extents

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The Black Canyon of the Gunnison: Today and Yesterday
Wallace R. Hansen
1965, Bulletin 1191
Since the early visit of Captain John William Gunnison in the middle of the last century, the Black Canyon of the Gunnison has stirred mixed apprehension and wonder in the hearts of its viewers. It ranks high among the more awesome gorges of North America. Many great western canyons are as...
Geology of the Cedar Mesa-Boundary Butte area, San Juan County, Utah
Robert B. O’Sullivan
1965, Bulletin 1186
The Cedar Mesa-Boundary Butte area lies within the Colorado Plateau and includes about 650 square miles in southern San Juan County, Utah. Altitudes ranges from 3,890 feet on the westward-flowing San Juan River, the major and only perennial stream, to more than 6,400 feet on Cedar Mesa in the northwest....