1914 Bezobrazov triplane built by Russian aviator Aleksandr Bezobrazov.

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Previously:

1908 Sellers quadruplane - photo
1923 Farman F.120 sesquiplane airliner - photos
1907 Multiplane - photo
Riout 102T Alérion Ornithopter flapping wing airplane - photo
Caproni Ca.60 Transaereo flying boat - photo