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<http://www.dailynews.com/general-news/20130913/100-billion-how-americas-richest-family-avoids-taxes-maintains-its-wealth>
<http://www.pasadenastarnews.com/article/20130913/NEWS/130919773/-100-billionhow-america-s-richest-family-avoids-taxesmaintains-its-wealth>