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ContributorsShen Quan (Artist) / 沈 佺 (Artist)
Created1740
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ContributorsPotter, A. F. (Author)
Created1918-01-10
Description

Letter from A. F. Potter to Carl T. Hayden describing John H. Page's request to build a railway for the Canyon Copper Company as "impractical."

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Created2007-08
Description

We conducted wildlife-highway relationships research from 2002–2006 along a 17-mile stretch of State
Route 260 in Arizona which is being reconstructed in five phases with 11 wildlife underpasses and 6
bridges. Reconstruction phasing allowed us to use a before-after-control experimental approach in our
research.

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Created1977-09
DescriptionThis addendum to the 1977 GCNP managment plan includes priority projects and planning for a 5-year period.
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Created1977-09
DescriptionNatural resources management plan and environmental assessment for preserving natural resources within the park for use and enjoyment of visitors. The approach is guided by the concept of maintaining and perpetuating ecosystems rather than protecting or preserving individual features or favored species.