Burnelli UB-20 prototype airliner from the 1930s. Only one was built.
Previously:
AVE Mizar flying car - video
Inside a 1930s passenger plane - photo
1923 Farman F.120 sesquiplane airliner - photos
1919 Ricci R4 concept transatlantic seaplane - photos
1949 Bristol Type 167 Brabazon airliner - GIF
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