Since the Appalachians extend into Canada, the "correct" pronunciation is entirely moot.

Older New Yorkers usually don't enunciate the "r" in "New York." Younger ones do. Which is "correct"?

(If you say "the one that matches the spelling," you'll be stuck with "Nor-folk" - with an "L.")

My larger point is, "Go figure." (A relatively recent Americanism, useful and concise, if a bit tart for some tastes.)