Goupy No.2
 The Goupy No.2 was an experimental aircraft designed by Ambroise Goupy and Mario Calderara and built in France in 1909 at the Blériot factory at Buc. The Goupy No.2 is significant for two major and influential innovations in aircraft design: it was the first tractor configuration biplane to fly and the first biplane to feature staggered wings.