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Description: | Cover layout for a Gisholt Machine Company promotional brochure. The drawing is rendered on tissue paper in graphite, yellow and black pastel, and white pa... |
Date: | 04 22 1930 |
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Description: | Right side profile view of an Alexander Eaglerock A-12 aircraft fitted with a Comet 7-RA air-cooled radial piston engine. A model of the Comet Engine Corpo... |
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