Kurt,
Come on, they didn't even have the big daddy of campgrounds....Yellowstone.
I did take a little time to look at the sublists they did have one in the best of fishing in our state however they missed a heck of a lot. My wife did remind me that our favorite sites don't offer the creature comforts of camping with mowed grass.
It has several in the west; CA,OR,UT.
Buy the way, there are some very nice campgrounds "East" of the Rockies.
I realize that the West, Northwest and Southwest are excellent areas to camp but don't under estimate the rest of the US.
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Kurt (Indiana)