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by
Dale L. Walker
1997, Forge
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by
Isabella L. Bird,
Daniel J. Boorstin
December 1999, University of Oklahoma Press
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by
Time-Life Books
January 1988, Time Life Education
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by
Peter Aleshire,
Cheryl Baisden,
Leo W. Banks,
Bob Boze Bell,
Don Dedera,
Bernard L. Fontana,
Dean Ellis Smith,
Larry Winter
August 2001, Arizona Highways Books