A plan for the development of the village of Grand Canyon, Ariz Waugh, F. A. (Frank Albert), 1869-1943 creator United States. Forest Service. contributor text book Washington Govt. Print. Off 1918 1918
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ENG Grand Canyon (Ariz.) https://www.biodiversitylibrary.org/bibliography/25110 12680099 agr18000966 10.5962/bhl.title.25110 U.S. Dept. of Agriculture