One nation :America remembers September 11, 2001

 Sullivan, Robert; Giuliani, Mayor Rudolph W.;

United States of America : Little, Brown, and Company , 2001

The U.S. constitution A to Z

 Maddex, Robert L.;

Washington, D.C. : CQ Press , 2002

Building American cities : the urban real estate game

 Feagin, Joe R.; Parker, Robert E.;

Washington, D.C. : Beard Books , 2002

Navies and the American revolution 1775-1783

 Gardiner, Robert;

Annapolis, Maryland : Naval Institute Press , 1996

Air force : an illustrated history : the U.S. Air Force from the 1910s to the twenty-first century

 Hearn, Chester G.; Dorr, Robert F.;

Princeton, New Jersey : Minneapolis : Zenith Press, 2012. , 2015

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