1. In 1892, Johnstown, Pennsylvania was devastated by a massive flood that killed over 2,200 people. Heavy rainfall caused the South Fork Dam to fail, unleashing a wall of water that swept through the city and surrounding areas.

2. On June 9, 1940, Joe Louis defended his heavyweight boxing championship against Arturo Godoy at Philadelphia's Municipal Stadium. Despite being knocked down twice in the second round, Louis went on to win the fight by decision.

3. In 1983, Pennsylvania became the first state in the nation to establish a program to provide free mammograms to low-income women. The program, which is still in place today, has helped thousands of women detect breast cancer early and receive life-saving treatment.

4. On June 9, 1967, a fire swept through the Hershey Chocolate Corporation plant in Hershey, Pennsylvania. The blaze destroyed several buildings, but no one was seriously injured.

5. The Pennsylvania State Police Troop J, which covers Bucks, Montgomery, and Philadelphia counties, was established on June 9, 1906. Today, Troop J is responsible for providing law enforcement services to over 3.5 million people across southeastern Pennsylvania.