Dr.Wolfert

Wolfert Steerable Balloon Basket and Motor 1896

Wolfert Steerable Balloon Basket and Motor 1896

Basket and Motor of the Steerable Balloon
October 3, 1896 Scientific American

Dr.Wolfert Dirigible 1896

Dr.Wolfert Dirigible 1896

The Berlin Industrial Exhibition-The Steerable Balloon, 1896

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