Steamtown is having their annual Railfest Labor Day weekend and Scranton is having the Italian Festival to go right along with it. My brother and I attended both last year with my oldest niece and her family and plan on doing so again. I am hoping one of my younger nieces will be able to make it as she is interested but college courses may get in the way.
For details they have it listed on their Facebook page which I believe is Saturday through Sunday 9-5 both days IIRC.