This could be a very interesting postcard. Two Brothers Cliff and Walter owned the Jeffries Brothers Jewelry store in Frostburg Maryland. Cliff also bred Boston Terriers and entered one in the Philadelphia Dog Show in the 1930’s. His dog “Kid Boots” was the national winner that year. Since this postcard is to Philadelphia I’m surmising it was connected to that Dog show. Just my hunch but it does seem pretty likely.