Kees Kort Collection:
The first design of Roger Sommer seen on the Chalons field [26 September 1909]
Kees Kort Collection:
Sommer vintage 1911 pusher biplane also called the 'Grand biplan' or Aérobus [France, 1911]
Kees Kort Collection:
Family and acquaintances are flocking around a military Sommer pusher biplane [France, 1910]
Kees Kort Collection:
Georges Legagneux in flight on the Sommer pusher biplane at Lyon [France, 1909 - 1910]
Kees Kort Collection:
The Sommer biplane 1910 flown by Jean Daillens at the Grande Semaine d'Aviation Reims 1910 [France, 1910]
Kees Kort Collection:
Roger Sommer conquiert le record du monde
Kees Kort Collection:
Roger Sommer in flight for the world endurance record [France, August 1909]
Kees Kort Collection:
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Kees Kort Collection:
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Kees Kort Collection:
Henri Berlot in a special long wing version of the Sommer pusher biplane (Gnome 50 hp) [France, 1910]
Kees Kort Collection:
Marcel Paillette in his Sommer 'Biplan de course' during the Semaine d'aviation at Nantes [France, 1910]
Kees Kort Collection:
Marcel Paillette flying his Sommer biplane de course in Nantes [France, 1910]
Kees Kort Collection:
Marcel Paillette flying his Sommer pusher biplane on a flying week in France [Framce, 1910]
Kees Kort Collection:
Georges Legagneux flying in a Sommer pusher biplane in the 2nd aviation meeting at Reims June / July 1910 [France, 1910]
Kees Kort Collection:
The first design of Roger Sommer a complex design with three wing sections [France, 1908]
Kees Kort Collection:
Roger Sommer flying his own design pusher biplane on the 1910 Grande semaine d'aviation de Champagne at Reims
Kees Kort Collection:
Marcel Paillette in a Sommer pusher biplane just before departure (France, 1910)
Kees Kort Collection:
An early version of the Sommer monoplane with partly uncovered fuselage [France, 1912]
Kees Kort Collection:
Beautiful promotion card for the demonstration flights of Clément van Maasdijk at Heerenveen in his Sommer pusher biplane [France, 1910]
Kees Kort Collection:
Albert Kimmerling takes off in his Sommer monoplane from Vincennes (Paris) for the first lap in the European Circuit to Liège (Luik) [France, 1911]
Kees Kort Collection:
Auguste Bernard at the helm of a Sommer pusher biplane [France, 1911]
Kees Kort Collection:
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Kees Kort Collection:
Roger Sommer portrait
Kees Kort Collection:
Georges Legagneux in the pilot seat of a Sommer pusher biplane [France, 1910]
Kees Kort Collection:
Georges Legagneux and his wife in the passenger seat preparing for the Passenger Prize competition part at the aviation week at Lyon on 9 May 1910. They compete in a Sommer pusher biplane (vintage 1910, Gnôme rotary driven) [France, 1910]
Kees Kort Collection:
A Sommer pusher biplane (Vintage 1909 - 1910) in flight over the Camp de Châlons [France, 1909 - 1910]
Kees Kort Collection:
Marcel Paillette in flight with his Sommer biplane pusher [France, 1910]
Kees Kort Collection:
Léon Verstraeten in the pilot seat of his Sommer pusher biplane [France, 1910]
Kees Kort Collection:
The successful Sommer Biplane Pusher (1910) powered by a Gnôme rotary engine of 50 hp [France, 1910]
Kees Kort Collection:
A Sommer Type R2 pusher biplane in flight at the Camp de Châlons [France,1912]
