Andrew Bain showed me a Persian place to eat on 18th St, NW. The Caravan Grill is a great buffet away from the out-of-towner crowds of Adams-Morgan. Plus, we saw our old friend and photo history instructor David Haberstich there. He's the head photo archivist at the National Museum of American History. If a Washington insider like Haberstich dines here you know this place is a treasure trove of serve-yourself delights.