I'm in Pennsylvania for my goddaughter's senior recital. As I was driving down last night, there was a story on NPR about the Haven Brothers Diner in Providence.
Since one of my great-great uncles was Mayor of Providence in 1896-98, and both of my grandfathers, and my parents, and I all went to Brown, along with my son, I know the Haven Brothers trailer well.
I was surprised that they did not talk about the other "lunch wagons" around the City. There is one which has traditionally parked at the corner of Brown and Thayer Streets (right outside the Wriston Quadrangle). While that one does not have a sit down section, it has served many generations of Brown students.