I've heard of all of those and been to Miller's several times
. I asked one of my cousins and she thinks it might of had the word Carousel in the name. She thinks it was closer to Dutch Wonderland and was on Rt 30 in a shopping center but the shopping center was perpindicular to Rt 30. She was younger than me when we went but she has an amazing memory (even if she can't remember the name of the place lol).
It was probably more than 10 years ago. We used to go every year to Hershey Park then to Lancaster(Dutch Wonderland). We haven't been to Dutch Wonderland in several years because we don't have any little kids in the family anymore.
We will soon though because my cousin is pregnant and we are already thinking of where we could take the baby (when he's a little older) that we went to as kids(Dutch Wonderland, Magic Forest in Lake George NY, Sesame Place etc.). We still went to the Lancaster area but not to the Dutch Wonderland area. I haven't been to Lancaster in like 2 or 3 years since we moved to FL.
Thanks for the suggestions though!