American driller Edwin Laurentine Drake successfully drilled the first oil well in Pennsylvania, US.
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Donald Trump survived an assassination attempt during a campaign rally in Butler, Pennsylvania.
The Grand Union Flag flew for the first time with the commissioning of the USS Alfred.
The first music store in America was opened in Philadelphia by Michael Hillegas.
Harriet Tubman escaped from slavery.
The first newspaper from a vending machine was bought in Columbia, Pennsylvania.
