1. On June 22, 1775, Pennsylvania troops played a significant role in the Battle of Bunker Hill during the American Revolution. Led by General William Thompson, the soldiers fought alongside those from neighboring colonies and demonstrated their bravery on the battlefield.

2. June 22, 1928, marked the dedication of the Valley Forge National Historical Park in Pennsylvania. The park is home to the site of the Continental Army's winter encampment during the Revolutionary War and serves as a reminder of the sacrifices made by American soldiers during that time.

3. In 1938, the Pennsylvania Turnpike, the first long-distance, limited-access highway in the United States, opened to the public on June 22. The turnpike revolutionized transportation in Pennsylvania and paved the way for similar highways across the country.

4. On June 22, 1944, the Supreme Court of Pennsylvania upheld the state's ban on teaching evolution in public schools, known as the Butler Act. The decision was later overturned by the U.S. Supreme Court in the landmark case of Edwards v. Aguillard.

5. In 1963, the Pennsylvania Railroad completed construction of its iconic railroad bridge over the Susquehanna River on June 22. The bridge, which is still in use today, is a beautiful engineering marvel that spans over 3,000 feet and is over 90 feet high.