This postcard image of Duluth from Gallagher’s Studio of Photography appears to be circa 1970. The card is not dated and was never mailed.
The description on the back reads:
Duluth, Minnesota
A view of Downtown Duluth taken from scenic Skyline Drive. Duluth’s new Arena-Auditorium on Harbor Drive and the new circular Radisson Hotel combine to make Duluth the Convention-Sport and Cultural Center of the Northwest.
The Duluth Arena-Auditorium opened in August 1966; the Radisson Hotel Duluth Harborview opened in May 1970.