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Letter From R. P. Gilliland to Carl Hayden Regarding President's Highway and Sale of Bright Angel Trail

ContributorsR. P. Gilliland, R. P. Gilliland (Author)
Created1923-10-10
Description

Letter from R.P Gilliland to Carl Hayden regarding the sale of Bright Angel Trail (Ariz.) and construction of the President's Highway from Maine, AZ, to the Grand Canyon.

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Desert Ironwood Primer - Biodiversity and Uses Associated With Ancient Legume and Cactus Forests: Sonoran Desert Conservation Plan

ContributorsNabhan, Gary Paul (Author) / Pima County (Ariz.). County Administrator's Office (Publisher)
Created2000-02
Description

Takes a comprehensive view of ironwood habitats in both the United States and Mexico, evaluating the ecological and cultural resources supported by the ancient ironwood tree. The study provides an overview of the history and ecology of desert ironwood, and a discussion of the binational research effort undertaken to produce…

Takes a comprehensive view of ironwood habitats in both the United States and Mexico, evaluating the ecological and cultural resources supported by the ancient ironwood tree. The study provides an overview of the history and ecology of desert ironwood, and a discussion of the binational research effort undertaken to produce the report.