Progress in the development of the national parks / by Stephen T. Mather.
United States. Dept. of the Interior.
Mather, Stephen Tyng, 1867-1930
Washington :Govt. Print. Off.,1916.
At head of title: Department of the Interior, Office of the Secretary.
At head of title: Department of the Interior. Office of the Secretary.
National parks and reserves
SB482 .A3 1916
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