Jerry A. Cannon is a registered engineer and is well regarded in Arizona for preserving old bridges. Patricia D. Morris is an urban planner and restoration advocate. They tell the ...mehr sehenJerry A. Cannon is a registered engineer and is well regarded in Arizona for preserving old bridges. Patricia D. Morris is an urban planner and restoration advocate. They tell the story of the state's historic bridges with photographs provided by the Arizona Department of Transportation, Arizona State Historical Societies, private collections, and others.weniger sehen