Filtering by
- All Subjects: Grand Canyon National Park (Ariz.)
- All Subjects: Goodman, Frank R., 1882-1968
- All Subjects: Flood forecasting
- Creators: United States Geological Survey
- Creators: Goodman, Frank R.
- Creators: Riordan, M. J.
- Creators: Bankhead, Nathan
Letter from M. J. Riordan to Carl Hayden expressing his opposition to the federal government's takeover of Bright Angel Trail.
Letter from F. R. Goodman to Carl Hayden expressing Coconino County's interest in handing over Bright Angel Trail to the government provided a sufficient amount of money is appropriated to build a road from Maine to the Grand Canyon.
Letter from Nathan Bankhead to Carl Hayden concerning his sheep and the accusations of Horace M. Albright.
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.
Letter from Michael J. Reardon to Carl T. Hayden, in agreement with Ralph Cameron, asserting that Bright Angel Trail should not be sold from Coconino County to the United States.
Letter from F. R. Goodman to Carl T. Hayden asking for clarification about the agreement to construct an approach road to the park