Visit that doesn't count Non NPS sites, Mississippi Sand Hill Crane NSW

I learned about this location from the lady at Grand Bay, and she said they had a stamp and pins, so off I went on the way back to the campground. 

Success! 

 They also had a sticker: 

I got two nice pins here, both only 3.00!  One each for Sand Hill and Grand Bay.  The park is located at Exit 61 on I-10.