of SBC-Ameritech merger (1999-10-06) Stock Quote from Yahoo! July 2005 IEEE Article Yahoo! — AT&T Corp. Company Profile ATT's most recent conference call transcripts Unnatural Monopoly: Critical Moments in the Development of the Bell System Monopoly by Adam D. Thierer AT&T Cell phone frequencies, and what do they mean? "AT&T buys IBM's Global Network", BBC News, December 8, 1998 "SBC closes AT&T acquisition", CNet News, November 18, 2005 "SBC launches 'new' AT&T", AT&T archive, November 18, 2005 "AT&T to buy BellSouth for $67 billion", CNet News, March 5, 2006 "AT&T gets final approval to acquire BellSouth, CNNMoney, December 29, 2006 "AT&T and BellSouth Join to Create a Premier Global Communications Company", AT&T News Room, December 29, 2006 Yahoo! - AT&T Mobility LLC Company Profile AT&T subsidiaries Bell System Defunct mobile phone companies of the United States Defunct companies based in Texas Companies based in Houston American companies established in 1984 Telecommunications companies established in 1984 Telecommunications companies disestablished in 2006 1995 establishments in Texas 2006 disestablishments in Texas