Freymark Drugs

Every once in a while when I do historical research, I come across an old ad that probably wouldn't be run today for one reason or another. This 101-year-old ad for Ambridge's Freymark drug store is one of them:

Freymark The Drug Man ad
Pittsburgh Gazette Times
February 8, 1914

Although the address for Freymark in the ad is 513 Merchant Street, it was on the east side of Merchant. In 1917, Ambridge changed its building numbering method, and as a result, the east side of Merchant, previously the odd numbered side of the street, became the even numbered side. As far as I know, 513 Merchant became 520 Merchant.