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41446-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
Description

Black and white print of people riding mules down a steep trail. Circa 1940-1949.

41447-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
DescriptionBlack and white print of an automobile exiting the park at an entrance with large stone pillars and sign with entrance fees. Circa 1940-1949.
41448-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
Description

Black and white print overlooking the canyon with clouds below the canyon's highest elevations. Circa 1940-1949.

41449-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
DescriptionBlack and white print of automobile near a park entrance with stone marker. Circa 1930-1939.
41443-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
Created1940
Description

Black and white print of the south rim from Tuweep.

41444-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
Description

Black and white print of people riding mules down a trail. Circa 1940-1949.

41445-Thumbnail Image.jpg
ContributorsCampbell, Bert (Author) / Campbell, Myrtle (Author)
DescriptionBlack and white print of an automobile parked near the Watchtower. Circa 1940-1949.
42547-Thumbnail Image.png
Created2010-02-05
Description

While we may view climate change issues as a more global or national problem, our unique Sonoran Desert ecosystem is a recognized global resource; hence climate change is an important consideration in how we manage and protect our fragile desert ecosystem. This discussion is designed to promote local awareness of

While we may view climate change issues as a more global or national problem, our unique Sonoran Desert ecosystem is a recognized global resource; hence climate change is an important consideration in how we manage and protect our fragile desert ecosystem. This discussion is designed to promote local awareness of how climate change may impact our resources.

42548-Thumbnail Image.png
Created2009-08-28
Description

This report examines how effectively Pima County’s natural open-space acquisitions have addressed priorities for conserving species’ habitats and landscape features identified in the Sonoran Desert Conservation Plan. The scope of this study is beyond the County's Multi-Species Conservation Plan, which is a subset of the overall Sonoran Desert Conservation Plan.

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Created2009-08-28
Description

The purpose of this study is to provide the U.S. Fish & Wildlife Service with an analysis that identifies anticipated impacts to each of the covered species and asks the question: How effectively will the County's mitigation lands include the specific habitats of covered species under the Multi-Species Conservation Plan?