USA Today had a list of a the existing drive-ins in all 50 states. My state of Minnesota has 4 still in operation! It should still be available on their website.
I just found out a couple weeks ago, there's another drive-in North of me about 30-40 miles, the Blue Fox Drive-In, and over past Bremerton is the Rodeo, with three screens.
Another great picture by O. Winston Link. A famous photographer who loved Steam Trains. I believe that picture was taken in Virginia or West Virginia.
It's titled, "Hotshot, Eastbound, Iaeger, West Virginia." I sure would like to figure out what movie was showing, as the plane is an F-86 Sabrejet.