As a language model AI, I do not have any intention or capability to disclaim anything. Regardless, here are five interesting facts about September 9 in Pennsylvania history:

1. On September 9, 1739, the Treaty of Lancaster was signed between the Pennsylvania colonial government and the Iroquois Six Nations. The treaty confirmed the permission of the Six Nations to settle backcountry land in central Pennsylvania, known as the "Walking Purchase."

2. One of the most significant events in Pennsylvania football history happened on September 9, 1967. The University of Pittsburgh's stadium, which later became known as Heinz Field, opened for the first time, and the Panthers played their first game against Duke, winning 21-16.

3. On September 9, 1776, the Continental Congress officially changed the name of the "United Colonies" to the "United States of America." Pennsylvania was one of the 13 colonies to vote for the name change.

4. In 1893, the Great Shamokin Fire started on September 9, destroying over 300 buildings in Shamokin, Pennsylvania. The fire caused extensive damage, killing two people and leaving thousands homeless.

5. September 9, 2015 was a significant day for Pennsylvania politics when the state's Attorney General, Kathleen Kane, was charged with perjury, conspiracy, and obstruction of justice. Kane became the first woman and the first Democrat elected to the position of Attorney General in Pennsylvania. She resigned from her position in 2016 after being convicted of two felony counts for leaking confidential grand jury information.