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Headquarters U.S. Army... www.usace.army.mil

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US Army Corps of Engineers... commons.wikimedia.org

History Publications www.usace.army.mil

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The Dexterous History of... interestingengineering.com

The History of the U.S.... www.amazon.com

America's Engineers - Your... usarmyengineer.com

US ARMY CORPS OF ENGINEERS... www.fortamerica.com

Graham assumes command of... www.usace.army.mil