This undated postcard, published by Zenith Interstate News Company, shows the USS Forrest Sherman Destroyer-931 docked on Rice’s Point in Duluth, with the Peavey grain elevator in the background.

The caption on the back of the card reads:

One of the many Cruisers or other type warships which every summer dock in Duluth-Superior Harbor and have open house and permit visitors aboard.

The photo could be from 1959, which would corelate with this tidbit from the USS Forrest Sherman (DD-931) Wikipedia page:

During the summer of 1959, Forrest Sherman joined in Operation Inland Seas, the cruise of a task force into the Great Lakes in celebration of the opening of the St. Lawrence Seaway. She served as escort to the Royal Yacht HMY Britannia with President Dwight D. Eisenhower and Queen Elizabeth II embarked, then sailed on to entertain over 110,000 visitors at Great Lakes ports.