So you are saying we have to decide between a government employee and an SPS poster....I guess you guys know more than people who have spent their careers in the park service. You have to love this board!
For the record, after consulting my handy dandy National Park passport. The Natchez Trace is a Parkway. Yellowstone is a National Park. The National Park Service manages over 400 sites that have all kinds of designations. But to put it simply all 400+ sites are "parks" but only 63 are National Parks. This is bureaucracy it its finest.***
If it was a National Park, it would have the NP behind it like Congaree.