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Rarified air balloon - A black and white drawing of an air balloon
Public domain image of a balloon aerostat, early aeronautics, no copyright restrictions image - Picryl description
Planet Earth
a system of aeronautics comprehending its earliest investigations and modern practice and art designed as a history for the common reader and guide to the student of the art in three parts containing an account of the various attempts in the art
aeronautics
air balloons
aviation history
balloon
balloon ascensions
balloons
balloons aircraft
engraving
engravings
rarified