The sole Potez 662, presumably at Méaulte where it was built. It was the only new airliner at the 1938 Paris Air Show, although derived from the Potez 661. It still had a twelve-passenger capacity but each of the four engines was three times as powerful! Cruise speed thus leapt from 300 km/h to 400 km/h. Range given as 1000 km. Under the Vichy government, the aircraft was used by General Charles Huntziger, who had signed the armistice on 22 June 1940. Returning to Vichy from Algiers it crashed on 12 November 1941 on the south slope of the Mont Aigoual. All seven people on board, including Huntziger, were killed. Photo from: Nationaal Archief (Netherlands)

The Herrick HV-2 Vertaplane could fly as a biplane or as an autogyro. The upper wing could be unlocked, but not locked in flight. The earlier HV-1 crashed, but the HV-2A successfully converted from fixed-wing to autogyro mode for the first time in July 1937 over its Boulevard Airport, Philadelphia base. Test flying had already begun in 1936 and this visit to Floyd Bennett Field took place in that year if the date is correct. Photo by: Rudy Arnold / Smithsonian Institution

The XR-10, which was to carry ten troops, was said to be the largest helicopter in the world. It first flew on 24 April 1946. This photo was probably taken during a press demonstration on 25 September. Powered by two Wright R-975 Whirlwind engines in nacelles on the sides, the beast was dangerous to fly and the prototype crashed on 3 October 1949, killing test pilot Dave Driskill. Photo by: Howard Levy / Nederlands Instituut voor Militaire Historie

Delivered to the Norwegian Navy (in exile in Canada) on 25 March 1941 with the serial 20. In April 1941 it was integrated into the RAF, keeping its Norwegian serial. It served with 330 (Norwegian) Sqn in Iceland as GS-U. The squadron provided convoy escort duties for the sea lanes around Iceland during WW2. In 1942 the GS squadron code was removed, and also the serial was by then not carried anymore, only the U was retained. On 21 April 1943 it made a forced landing on the Thjórsá River in Iceland and sank. In 1979 the wreck was lifted and brought to Northrop for restoration. In November 1980 it was given to Norway and became an exhibit at the Forsvarets Flysamling at Gardermoen. The triangle marking on the fin is the Northrop logo.

A Lockheed design, built under license in Mexico by Lockheed-Azcárate SA as the LASA-60. They built 44 aircraft, 18 of which were for the Mexican Air Force. The type was also produced under license by Aermacchi in Italy, and by Atlas in South Africa.

The Skyhopper prototype at Culver City, CA in May 1946. That's some "airport" with a lot of other planes in the weeds including the Fairchild PT-19 next to the Skyhopper. This original single-seat version was marketed as the Skyhopper I, but the type name was later changed to Skyhopper 10.

Kellett helicopter with twin intermeshing rotors. This prototype first flown 7 August 1944. One XR-8 and one XR-8A built. Programme cancelled by US Army in 1946, but at least one of the helicopters was still being flown in 1947. Photo from: Wright State University

Beautiful photo of German airmen with an Albatros scout. 424 Albatros C.V aircraft were built but the type was not successful, 'rather slow and unwieldy' according to a US document. Photo from: Library of Congress

The Hall Aluminum Aircraft Corporation was not terribly successful, but managed to sell nine PH-1 flying boats to the US Navy in 1930. Production of the PH recommenced in 1936 for the Coast Guard which ordered seven PH-2s, and seven PH-3s in 1939. These were the USCG's largest aircraft. Rudy Arnold photographed V164 off Coney Island - the building on the far right is the Half Moon Hotel which stood at West 29th Street. This one was lost in July 1939. The type was used for anti-submarine patrols during the war and kept in service until 1944. Photo by: Rudy Arnold / Smithsonian Institution

Light aircraft by the innovative Hall Aluminum Aircraft Corporation. Only one mainwheel but note the extensive strutting for the outriggers. Did the strange wing slats slide back? Also had unusual steering system hanging from the roof. Photo date given as 1 November 1936, but Charles Ward Hall was killed crashing this aircraft into a tree on 21 August 1936. Photo by: Rudy Arnold / Smithsonian Institution

A white elephant it was, but the 40-tonne Laté 521 did manage route proving flights to New York, without carrying paying passengers. Named after naval lieutenant Paulin Paris, the sole 521 was photographed over Long Island by Rudy Arnold, arriving from Biscarosse via Lisbon and Horta, Azores. The original design had four engines in tandem pairs but two outboard engines had to be added. One Laté 522 and three Laté 523 versions were also built. The five flying boats were all impressed by the French navy in 1939. None survived WWII. Photo by: Rudy Arnold / Smithsonian Institution

The F.70 was a four-passenger airliner first flown in 1920. F-AGGG, on the right, and F-AGGH are the only two examples listed in the large fleet of the CIDNA company, from December 1924. No company markings are visible and they were presumably always intended for resale, arriving at Poznan - Ławica on 3 May 1925 to become the first aircraft of the new Polish airline Aero. F-AGGH to P-POZA. Photo from: ETH-Bibliothek Zürich

Crew rest at Prestwick before continuing to Paris for the 1983 Paris Air show. It carries the Paris Show number 352.

The first prototype of the six-engined BV 222 Wiking, rolled out of the new Finkenwerder factory in late August 1940. Flugkapitän Helmut Rodig made the first flight on 7 September. Note barrage balloon.

The wooden high-wing four-seat Finnish Kurki was designed at the State Aircraft Factory in 1926 and its maiden flight was on March 20th 1927. It was designed as a civilian group-training, passenger and mailplane. Its nickname was "Järvinens box". Test flights were flown in 1927, but the design did not prove workable. The aircraft is conserved. The engine is missing. [Nikon D750 + Tamron SP 24-70mm/2,8G VC]

Built as an Advanced Technology Tactical Transport technology demonstrator. First flew in 1987. Preserved at Edwards AFB after its testing program was complete.

A collaboration project by 3 engineers resulted in the creation of this aircraft. The prototype first flew in October 1947, but plans for mass production were interrupted by the Korean War. Only 5 aircraft were built: c/n 1, 2 & 3 in 1950, c/n 4 & 5 in 1953. In 1986, c/n 3 was donated by the Anderson Greenwood company to the EAA. By the end of August 2008 it was no longer registered to them. In May 2009, the 5 aircraft were still on the US registry. By August 2018, ony 2 aircraft remained registered.

Designed by Shirl Dickey, this American homebuilt aircraft first flew in 1984. It is based on the Rutan Long-EZ and features similar characteristics. There are apparently 3 versions; the Mark I comes with a Buick V8 car converted engine. the Mark II features an aircraft engine. the King Racer offers a larger cockpit. By 1998, the company reported 4 airworthy aircraft. By 1999, this number had risen to 6. In December 2013, 15 examples were registered with the FAA.