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Letter from Stephen T. Mather to Carl T. Hayden advocating for a reduction in automobile fees for the South Rim entrance.
Why I oppose the approval of the Colorado River Compact, by Geo. W.P. Hunt, Governor of Arizona, 1923?
Ernest McFarland to John J. Rhodes re: Bridge Canyon and Upper Basin Project bill, March 8, 1956.
C.C. Tillotson to Carl T. Hayden, 2/19/1945 re: Colorado-Verde Project, water allocations and Mexican water.
John R. Murdock to Carl T. Hayden, February 21, 1944 re: Mexican water treaty.
"Arizona's Benefits From the Colorado River," by the Colorado Verde River Association, January 29, 1945.
This is the truth about the Central Arizona Project, 1950.
"Let the Supreme Court Decide," issued by the Colorado River Association, Los Angeles, California, 1948.