The RS-1 was designed in 1937 by Harland Ross for actor Harvey Stephens. It was a regular at the Nationals well into the postwar era. Now preserved at the National Soaring Museum at Elmira, NY, as the Ross R-1. The FAA called it a Stephens RS-1. Photo by: Hans Groenhoff / Smithsonian Institution

Sold in France in January 1937 but destined for the Republican forces during the Spanish Civil War. Photo by: Rudy Arnold / Smithsonian Institution

NC600 served with the Conservation Department from 1940 to 1948 when it was replaced by a Ryan Navion. The Waco does not appear in an FAA search, so its c/n is not known. NC600/N600 appears to be a registration reserved by the Conservation Department because it was used in 1958 for its DHC-3 Otter. Photo from: Photo by: Rudy Arnold / Smithsonian Institution

NC15045 parked on a beach showing off its ability to land away from airports. The American Escadrille might be the organisation of that name that was tasked with developing civil aviation in the Americas. N15045 has been preserved by the EAA Aviation Foundation at Oshkosh. Photo by: Rudy Arnold / Smithsonian Institution

Only one V-100 was built. It was a trainer and aimed at export markets. Engine is a P&W Wasp Junior of 400hp. No sales eventuated. Registration cancelled in November 1934 as "destroyed". Photo by: Rudy Arnold / Smithsonian Institution

Still current in 2023 as N20304. Photo by: Rudy Arnold / Smithsonian Institution

Looking pristine, this Kingfisher was among a batch returned to the US Navy from the Royal Navy in 1943. Photo by: Rudy Arnold / Smithsonian Institution

Prototype of a long-range floatplane version of the SB2U. It was converted back to an SB2U-1. The designation SB2U-3 was reused for an upgraded version of the carrier-based dive bomber. Photo by: Rudy Arnold / Smithsonian Institution

Accident at Johannisthal, the old mecca of German aviation. It was alternatively called Adlershof ('eagle's yard') after another adjacent Berlin neighbourhood. DLR were based here between 1919 and 1922 when they moved to Staaken. Before the allocation of D numbers from March 1920, the airline's aeroplanes got a fleet number, still worn here in small print. The aircraft is a LVG C.VI Kabine although the cabin of the converted reconnaissance plane is crushed here. D-14 had another crash near Hamburg on 8 May 1922, but was repaired, and seems to have survived with successor airlines Deutscher Aero Lloyd and DLH until 1928. Photo from: ETH-Bibliothek Zürich

'The first Frenchman after the war in Johannisthal.' Special long-range Bre 14 with fairing behind observer's head and external fuel tanks from old Breguet Br.M5 aircraft, increasing range to 1000 km. The pilot is Henry Roget with his fox terrier Folette and mechanic Rodes. They made a grand tour through Eastern Europe from 9 June to 8 September 1920. However, 9128 is also said to have belonged to the French military mission in Poland and to have made courier flights to Riga during the Polish-Soviet War (1919-1921). Photo from: ETH-Bibliothek Zürich

A former French Bre 14 B2 bomber which served in the Swedish army air force as s/n 9100. Registered S-AIAA to pilot Nils Söderberg in June 1923 for participation in the ILUG exhibition, with event number 1. On 5 August Söderberg won a rally between Rotterdam - Waalhaven, Holland and Gothenborg in just over four hours, beating Bertus Grasé in the Fokker DC.I, H-NABZ, by a couple of minutes. S-AIAA purchased by Swedish Red Cross in 1924, joining their Breguet 14T ambulance, S-ASAA. Both regs stricken at the end of 1926. Photo from: Flygvapenmuseum

A Bristol F.2B Fighter fitted with the Bristol Jupiter radial engine and an oleo-type undercarriage, the Jupiter Fighter was fast but short on range. Seen here at ILUG in Gothenburg, G-EBGF crashed in England in November 1923 after an engine failure, but the second of three conversions, G-EBGH, was purchased by the Swedish air force following cold-weather trials in Kiruna. Photo from: Flygvapenmuseum

Originally the H-70, NX20399 was built by Management & Research under a Department of Commerce contract promoting lightplane development. After an accident in January 1938, was rebuilt and modified by Tuscar as the H-71. It managed to clock up 60 flying hours before NX20399 crashed in August 1945. Designer was Thomas Holt and engine is a Menasco. Photo by: Rudy Arnold / Smithsonian Institution

Ten Travel Air 16-Es powered by Wright Whirlwind engines were built for the civil market. Erickson and Remmert was Edward L. Erickson and John L. Remmert, who were based at Floyd Bennett Field. Photo by: Rudy Arnold / Smithsonian Institution

Seaplane pier at Torslanda. At the 1923 airport building is most probably ST-4 Monospar SE-ADS, which was based here. LN-DAH dates the photo between 1936 and 1940 at the latest. A new terminal was built on the north side of the airfield in 1938. Photo from: Scandinavian Airlines - SAS

The C.68 was a two-seat training and touring aircraft with folding wings, developed in 1922 from the single-seat C.67. Six C.68 aircraft were built. This should be the last one, going by the two-tier construction number. Show number 16 is the Caspar CLE 11, D-294. Photo from: Flygvapenmuseum

Wearing show number 34. Reported name Buchfink. Possibly sold as RR-DAI. Photo from: Flygvapenmuseum

An early Stahlwerk Mark-built Rieseler R III, possibly the third, at the ILUG exhibition in Gothenburg. Sister machine D-283 (c/n 94) was also present at ILUG and was sold in Sweden as S-APAA. Photo from: Flygvapenmuseum

This early R III, registered in Sweden on 1 June 1922, was built by Walter Rieseler Kleinflugzeuge at Berlin - Johannisthal. The single-seat sport type was produced by Stahlwerk Mark in Breslau (now Wrocław) as the Stahlwerk Mark R.III/22 or Stahlwerk Mark Rieseler Sport. The name Rieseler is frequently misspelt as Riesler. Photo by: Oliver Lindkvist / Arlanda Flygsamlingar

V155 was withdrawn from use in November 1939 about three years after delivery. The USCG acquired five OO-1s built by Viking Aircraft of Connecticut after trialling a French-built Schreck FBA 17 in 1931. Photo by: Rudy Arnold / Smithsonian Institution