Montoursville (near Williamsport), PA. Cellini's Submarine House
Excellent half of cheesesteak for less than 5.00! They use provolone cheese, & get their rolls from Fox's Home Style Bakery in Pennsdale/Muncy, PA.
They are just a "hole in the wall" @ 378 Broard St. They've been there since the 1950's.
..We stopped there to eat on our way to Sam's Club, so that we wouldn't be hungry & buy too much!