Improved Balloon
Doudney, David Alfred, 1811-1894; Gregory, J., active 1837

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Description
Letter to the editor by J. Gregory describing his improved gas balloon, with an accompanying labeled mechanical illustration. For more information about this item, visit https://archivesspace.mit.edu/repositories/2/digital_objects/717
Subject
Inventions, Balloons (aircraft), Mechanical drawing, The Penny Mechanic and Chemist. A Magazine of the Arts and Sciences