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July 31, 1790: The First U.S. Patent Issued

On July 31, 1790, the fledgling United States took a decisive step toward promoting innovation and industrial progress: it issued its first patent. The recipient was Samuel Hopkins of Philadelphia, who secured legal recognition for a novel process of making potash—an essential ingredient in…

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July 30, 1864: The Battle of the Crater

On the morning of July 30, 1864, Union forces launched a bold yet catastrophically mishandled attempt to break the Confederate lines outside Petersburg, Virginia—an effort that would become known as the Battle of the Crater. As part of the larger Petersburg Campaign, the battle…

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