Colored etching of Professor Argand launching of a hydrogen in the presence of King George III, Queen Charlotte, and the Royal Family in Windsor Park. On this occasion the King made a royal speech, short, true, and to the point. He said, "See, it goes." Publication information printed below title is illegible. Created by Smithsonian National Air and Space Museum Date Created 07/06/2015 Source Smithsonian National Air and Space Museum Keywords Art Rights and Restrictions Not determined
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