In the early 1900s, George Hacker, who advertised that he was the "First Tailor in Ambridge," had a shop at 291 Fourteenth Street, the block between Church and Merchant Streets. His shop window also says "merchant," but I don't know what he sold. I also do not know who the two people are in the photo, as any caption or article which might have identified them wasn't included with the above old Daily Citizen newspaper clipping.
[Update July 21, 2014: While there is no building currently numbered 291 Fourteenth Street in Ambridge, Gary Gardner pointed out that the facade of 273 Fourteenth Street looks very much like the facade of the tailor shop. I agree. Perhaps the house numbers on Fourteenth Street were changed. If so, that makes doing research on old businesses and homes even more complicated.]
Maria Notarianni submitted this ad which she found in the Good Samaritan Church archives showing George Hacker's tailor shop was once at a different address:
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