Thor Solberg was a Norwegian-born aviation pioneer who made the first successful flight from the United States of America to Norway in 1935. He made the journey, which started in New York City, in an open-cockpit single-engine aircraft with no landing instruments. For this reason, he was restricted to an altitude of 1,000 to 10,000 feet. Solberg also founded the Solberg-Hunterdon Airport in New Jersey.

The Loening C-2 Air Yacht was an amphibious airliner produced in the United States at the end of the 1920s, developed from the OL observation aircraft the firm was producing for the US military.