The 1909 Etrich-Wels “Praterspatz” (Prater sparrow) tractor monoplane was designed and built by Igo Etrich and Franz Wels in the Austro-Hungarian empire.
Etrich-Wels Praterspatz / Prater sparrow
The 1909 Etrich-Wels “Praterspatz” (Prater sparrow) tractor monoplane was designed and built by Igo Etrich and Franz Wels in the Austro-Hungarian empire.
All Aero 