This is an Ektachrome postcard of the newly deployed car ferry serving Drummond Island, Michigan. It was christened Drummond Islander II.
The L.L. Cook Co., Milwaukee, WI
The description on the back reads:
New Drummond Island Ferry
Drummond Islander II
This new ferry transports automobiles and passengers between DeTour and Drummond Island, Michigan, in Michigan’s Upper Peninsula.
The postcard is dated 1962