Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- Creators: United States Geological Survey
- Creators: Battelle Memorial Institute. Technology Partnership Practice
- Creators: Crosby, W. W.
Letter from W. W. Crosby to the Director of the National Park Service defending his placement of the dynamite near Grand Canyon Village. He states there is between 16-20 tons of dynamite.
This plan was undertaken by the Arizona Department of Transportation Multimodal Planning Division Aeronautics Group to evaluate and recommend a terminal area layout to meet anticipated terminal area demands.
Geological examination of the park canyonland, with description of the rocks, water sculping process, volcanic cones and outflows, and land erosion. This edition is Volume 2, 1977 reprint, of the author's 1882 monograph. Includes 12 color maps, 10 color views and is number 280/1500.
Cooperative National Park Resources Studies Unit for University of Arizona, effects on Glen Canyon Dam releases on Grand Canyon River trips, a technical report, vol. no. 16.