This delicious sandwich, called the Caitlin, is filled with corned beef, cole slaw, swiss cheese, and dressing on grilled rye bread. Available at the 3rd Street Deli across from Capitol Park in downtown Harrisburg, I have had a couple of these and enjoyed every tasty bite. Their sloppy joe is another favorite. Not the sweet variety most places have, this one has a more spicy flavor.
As the chef there once told me "breakfast is best"; I recommend their western omelets as well as the two eggs, home fries, and corn beef hash combination.
They are only open for breakfast and lunch, but if you find yourself downtown looking for a good hometown deli atmosphere and food, I recommend giving them a try.