Laura, You were on the right track.
The answer I was looking for is the city of Duluth. The bay is Superior Bay. The lighthouses are: Duluth Harbor North Breakwater, South Breakwater Inner, South Breakwater Outer, & Wisconsin Point.
There's also the Minnesota Point lighthouse, but that one is just about lost.
Laura's turn!
Stan M
New Jersey Lighthouse Lovers
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Harry Wishlist: Tinicum Rear Range, Miah Maull Shoal, Finns Point, Bergen Point, Cross Ledge, Old Ambrose Lightstation, Romer Shoal, Barnegat Lightship, Liberty Lightship.
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