books.google.co.uk - Since the skyscraper's humble beginnings as a 10-story building in Chicago, more than 100 years ago, the super-tall building has been a source of wonder for the layman, and of inspiration, innovation, and fierce competition for architects, engineers, contractors, and the countless others involved with...http://books.google.co.uk/books/about/101.html?id=Lcir7wwIzhIC&utm_source=gb-gplus-share101
