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A.F. Bergqvist - aerial vessel Patented Oct. 17, 1893.

A.F. Bergqvist - aerial vessel Patented Oct. 17, 1893.

Design drawing for a flying machine invented and patented by A.F. Bergqvist. Pat. no. 506,969. Sheet 1 of 3. Fig. 1. Forms part of: Gilbert H. Grosvenor Collection of Photographs of the Alexander Graham Bell Fa... More