On June 10, 1943, the patent for the ballpoint pen was filed. To celebrate National Ballpoint Pen Day (#BallpointPenDay), we've pulled together writing implements from across our collection.
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Pencil; Hoover for President 1928
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Object Type: Aircraft
Set Name: Boeing Aviation Hangar
Set Name: Steven F. Udvar-Hazy Center in Chantilly, VA
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