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WikiPedia: AT&T http://about.att.com/story/att_makes_executive_app... http://www.att.com http://www.att.com/Investor/Earnings/2q13/ib_final... http://www.businessinsider.com/r-att-executives-to... http://money.cnn.com/magazines/fortune/fortune500/... http://www.dallasnews.com/sharedcontent/dws/bus/st... http://deadline.com/2017/07/att-formally-positions... http://www.forbes.com/companies/att/ http://www.forbes.com/global2000/ http://www.leichtmanresearch.com/research/notes04_...