Hancock Building Keeping Its Name After Sears Tower Rebranding

08/22/2009 05:12 am 05:12:01 | Updated May 25, 2011

Chicago's Sears Tower has morphed, officially at least, into Willis Tower, ak a "the Big Willie." In 2001, the old Standard Oil Building, ak a "Big Stan," became the Aon Center. What then, will happen to "Big John"?

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