On my evening walk, on this beautiful hot and humid, pre summer evening, I walked across the Halsted St. Bridge spanning the I-290 freeway in Chicago. I noticed this relic of days past….a manhole covered with a “Bell System” logo engraved into the manhole cover. Illinois was a very big part of the Bell System being the headquarters of the baby bells for many years with it’s own Illinois Bell signature. In the Midwest, the “Bell System” eventually became Ameritech in 1984 and then SBC Ameritech and THEN ATT in Chicago. I believe the legal name of ATT in Illinois is still actually Ameritech called ATT Teleholdings Inc….but ATT is a more recognized name and is now the front line name of the company.