Benjamin Franklin sailed from England back to the US to work for a Quaker merchant in Philadelphia.
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Amateur British chemist Sir James Jay invented invisible ink.
The US Postal Service was founded.
Louis Timothee became America's first paid librarian.
US Founding Father, Benjamin Franklin, wrote, 'There never was a good war or a bad peace,' in a letter to Josiah Quincy.
Benjamin Franklin was awarded the Godfrey Copley Medal.
