The Junkers W33 D-1167 Bremen made the first successful non-stop transatlantic flight from east to west on 12-13 April 1928, landing on Greenly lsland, Quebec. Lt Richard Cobb flew this US Army Loening trying to help. Cobb was acting on the orders of, and sometimes transporting, Gen Brown of the Army's 1st Corps Area, headquartered in Boston. Thus the winged 1 emblem, also seen in photo 640547, may be related to the 1st Corps Area. Photo by: Lesly Jones / Boston Public Library

One of the planes of the second Alaskan Aerial Survey, wearing an insignia of a winged seal with a smoking volcano. US Navy photographer Joseph 'Bunny' Haase was a member of the expedition. Photo by: Joseph Haase / San Diego Air & Space Museum

The US Navy acquired five COA-1 amphibians from the US Army. Receiving the OL-2 designation, they were intended for the 1925 MacMillan Arctic Expedition, with Richard Byrd leading an aviation element of three Loenings: NA-1, NA-2 and NA-3. NA-3 arrived at Squantum on 11 June 1925 and the photo is assumed taken that day. The pilot was Floyd Bennett. Byrd liked Bennett and put him in NA-1. The following year they headed for the North Pole together in a civilian Fokker F.VIIa-3m, Josephine Ford, which Byrd had coded BA-1. Photo by: Leslie Jones / Boston Public Library

Apparently ditched in the San Francisco Bay on 1 May 1928. Photographer unknown.

Del/25 April 1926 Preserved at the National Air and Space Museum's Steven F. Udvar-Hazy Center in Chantilly, VA.

Early Army version of the Loening OL amphibian. Wears USAAS serial on the rear fuselage and McCook Field code P-384 on the rudder. Also tested by NACA. Crashed on 9 April 1927. Photo from: Wayne State University

Four Loenings undertook a second Alaskan Aerial Survey in 1929. Also seen here are A-8078 Ketchikan and A-8076 Sitka. The fourth aircraft was A-8079 Petersburg. Photo by: Joseph Haase / San Diego Air & Space Museum

This aircraft took part in the Pan American Goodwill Flight which took 133 days in 1926-1927. The route was broadly San Antonio, Texas - Central America - west coast of South America as far as Valdivia, Chile - Buenos Aires - east coast of South America - Caribbean - Washington DC.

Six Loening OL amphibians of VO-10M deployed with a US Marines force which was sent to Shanghai and Tientsin (Tianjin) in 1927. Also called Camp MacMurray, Hsin Ho airfield was between Tianjin and Tanggu; we believe the modern spelling of the area is Xinhe. Photograph from the travels of Jean de Voyod. Photo from: ETH-Bibliothek Zürich

The historic Pan-American Goodwill Flight of 1926 and 1927 through Mexico and Central/South America covered 35,200 km (22,000 mi) and took 59 flying days The flight was made in five Loening OA-1A amphibian aircraft and to stimulate public interest, each aircraft was named after a major US city; 'New York', 'San Antonio', 'San Francisco', 'Detroit' and 'St. Louis'. 'San Francisco' is now on display in the Udvar-Hazy Center.