Since that was before most people made widespread usage of the Internet, so records are hard to come by.  would think that people who lived in the area could confirm in about 20 minutes.  Do, not, however, fall for the disinformation that was placed within the Q Movement that because a corporation was incorporated on a certain date has almost nothing to do with when a building was physically in a certain place and whether a certain business operated at that or any other location.  The good news about corporations is that behind them many interesting and purely legal things go on.  If they are public, then they report to shareholders each year on major things like store holdings and those would be in their 10-K filings with the US Securities and Exchange Commission for the time in question.