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Coconino Sun Article about the Discovery of Pluto


Scan of a Flagstaff newspaper, the Coconino Sun, with an article about the discovery of Pluto. The article features images of Clyde Tombaugh and V.M.…

Pluto Not Yet Explored Stamp

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Image of the 1991 postage stamp featuring an image of Pluto with the words "Not Yet Discovered." This stamp was part of a series issued by the United…

Pluto Explored Stamp

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Postage stamp created by the United States Postal Service (USPS) after the return of the New Horizons mission. The stamp reads "Pluto—Explored!" with…