1. The first ever Memorial Day parade was held in Doylestown, Pennsylvania on May 30, 1868, organized by Civil War veteran Maj. Gen. John Logan.

2. On May 30, 1922, the Lincoln Highway, the first transcontinental highway in the United States, was dedicated in Philadelphia. The highway stretched from New York City to San Francisco, covering over 3,000 miles.

3. The Johnstown Flood of 1889, one of the deadliest natural disasters in American history, occurred on May 30. Heavy rainfall caused the failure of a dam, resulting in the deaths of over 2,200 people and devastation to the town of Johnstown.

4. The Pennsylvania Turnpike, the first long-distance limited-access highway in the United States, opened on May 30, 1940, connecting Carlisle and Irwin. The turnpike now stretches over 500 miles across the state.

5. Pat Toomey, a well-known Pennsylvania politician, was born on May 30, 1961. Toomey served as a U.S. Representative from Pennsylvania's 15th congressional district from 1999 to 2005, and has been a U.S. Senator for Pennsylvania since 2011.