Genie, I think you're right about The Dalles (and always capital T); and I agree that the French city is "Le Havre" (space between, I think), but the Montana one is just Havre — which I have always assumed meant "The Port" (corresponding to Portsmouth on the British side of things), cognate with "Haven" — but in that case the Montana one is almost as much of a joke as Jersey Shore, PA.

Liland