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Artist Notes:
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Wish your nephew a Happy Birthday with a hot dog on a bun with a cute smile, googly eyes, black extremities and mustard hair. The background is a pretty yellow with a green and red balloon, black text, and a red border. FYI: Balloons filled with hot air or a buoyant gas have been used as flying machines since the 18th century. The earliest flights were made with hot air balloons using air heated with a flame, or hydrogen as the lifting gas. Later, coal gas and later still helium were used. An unpowered balloon travels with the wind. A balloon which has an engine to propel it is called a dirigible balloon or airship.
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