Ferris, Richard. [from old catalog] · New York, T. Nelson and sons · leaf 17
A dirigible balloon. tached to the ground by a cable, so that it may notrise above a certain level, nor float away in the wind.It is a free halloon if not so attached or anchored,but is allowed to drift where the wind may carry it,rising and falling at the will of the pilot. A dirigible balloon,…
Aeronautics
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