7200 Harford Road is about as far north and east as you can get and still be in Baltimore City.  It’s tucked just inside the county line, and downtown feels far-off when you’re out here.  On this block, MMA fighters train at American Muy Thai, customers get perms at Umberto’s Hair Salon, folks line up for Italian and German specialties at the counters of Mastellone’s Deli and Mueller’s Delicatessen, and the 112-year-old Fenwick Bakery sells homemade marshmallow donuts.  Field producer Adam Droneburg is our guide as we visit these spots and more on the 7200 block of Harford Road.