Federal Hill, the Italian province of Providence, Rhode Island, is home to a quantity of Italian restaurants and bakeries to match any of New York's Little Italys, and a great many of them are of significant age and boast the most wonderful of old neon signs. The one above, to Joe Marzilli's Old Canteen, is my favorite. Dates from 1956. Pink tablecloths inside. Kind of place you go after your kid's graduation.
The joint's sign around the corner (it sits at an intersection) is even better.
Not sure of the age of Cassarino's. Lovely signage, though.
Camille's is the oldest of the Italian restaurants along Atwells Road. Founded in 1914, in it's current location since 1919.