Frederic David Schwartz ( April 1 , 1951 – April 28 , 2014 ) was an American architect , author , and city planner whose work includes '' Empty Sky '' , the New Jersey 9-11 Memorial , which was dedicated in Liberty State Park on September 11 , 2011 , the tenth anniversary of the September 11 attacks
September 11 attacks
September 11 attacks
Frederic Schwartz