Mort Backus and Sons, Inc. is proud to be your Ogdensburg Buick and Chevrolet dealership of choice. Located at 4835 State Highway 68, our dealership is an excellent choice if you are looking for a Buick and Chevrolet dealer but aren't finding what you need locally. Mort Backus and Sons, Inc. is proud to provide the best in new and used Potsdam area Buick and Chevy cars, trucks and SUVs to all of St. Lawrence County.