Postcard from Duluth’s Harbor Entrance

This undated postcard was published circa the 1950s by the Dunn-Nordin Postcard Company of Marine on St. Croix, Minnesota. It offers an illustrated depiction of the Duluth Ship Canal.

The caption on the back of the card reads:

Two sea wall walks extend out into Lake Superior from the Aerial Bridge. A lighthouse is at the end of one of them. Ships can be observed from here passing close at hand into Duluth’s harbor.