Blacksmith, Patrick Lyon stole $162,821 in cash and gold from a vault at the Bank of Pennsylvania.
Source
A nuclear disaster occurred at Three Mile Island in Pennsylvania, US.
Polio vaccines were given to the first group of children in the US at Arsenal Elementary School in Pittsburgh, Pennsylvania.
The first Continental Congress meeting was held in Philadelphia, US.
The United States Marine Corps was founded when two battalions of Continental Marines came together in Philadelphia, Pennsylvania.
America's second president John Adams was inaugurated in Philadelphia, Pennsylvania.
