Contractors uncovered a bit of history this week as they continued renovation work at One Indiana Square, the 36-story office tower at Ohio and Pennsylvania streets. The work revealed parts of the old Indiana National Bank sign atop the current home of Regions Bank. The building last carried the INB flag in the early-1990s, before Indiana’s large local banks fell to out-of-state acquisitions. The project at One Indiana Square is giving the 1970 skyscraper a new facade. Anyone have a photo showing the old sign?