Franciszek Zwirko (16 September 1895 – 11 September 1932) was a prominent Polish sport and military aviator. Along with Stanislaw Wigura, he won the international air contest Challenge 1932. He was born in Sventiany, near Vilna currently in Lithuania (at that time part of the Russian Empire) and attended school in Vilna.
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90 lat temu Franciszek Żwirko i Stanisław Wigura wygrali Międzynarodowe Zawody Samolotów Turystycznych Challenge https://dzieje.pl/wiadomosci/90-lat-temu
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