1. In 1777, the Battle of Paoli occurred in Chester County during the American Revolutionary War. British troops surprise attacked a Continental Army camp, resulting in a significant number of casualties.
2. On September 19, 1787, the Pennsylvania State Constitution was adopted, establishing the basic framework and principles of government for the state.
3. The first football game at Gettysburg College was played on September 19, 1891, with the school's team defeating Maryland Agricultural College (now University of Maryland) 16-0.
4. In 1985, the Philadelphia-based organization Move was the site of a controversial bombing by police, resulting in the death of 11 people, including children, and the destruction of an entire city block.
5. On September 19, 2018, the Pennsylvania Supreme Court released a report on allegations of widespread sexual abuse in Pennsylvania's Catholic dioceses, prompting significant reforms within the state's Catholic Church.