1. In 1893, the first World Series was played at Pittsburgh's Exposition Park. The Boston Red Sox won the series against the Pittsburgh Pirates.
2. In 1957, the Mackinac Bridge was opened, connecting Michigan's upper and lower peninsulas. The steel for the bridge was made in Bethlehem, Pennsylvania.
3. In 1971, the Philadelphia 76ers became the first NBA team to feature a female coach on their staff, with Carol Blazejowski serving as an administrative assistant.
4. In 1982, the Penn State Nittany Lions football team defeated the University of Maryland 27-24 in a game that was dubbed the "Miracle in College Park" due to Penn State's comeback win.
5. In 2004, the Commonwealth of Pennsylvania recognized the Delaware Indian Nation as a sovereign entity, granting them state recognition in addition to their federal recognition as a Native American tribe.