1. On February 11, 1870, Pennsylvania abolished the death penalty for all crimes except first-degree murder. This was a significant step towards the eventual abolition of capital punishment in the state.

2. On February 11, 1929, the St. Valentine's Day Massacre occurred in Chicago. While this event did not occur in Pennsylvania, it had far-reaching consequences for the state as it helped to fuel the rise of organized crime in cities like Philadelphia and Pittsburgh.

3. On February 11, 1955, famous civil rights leader and Pennsylvania native, Bayard Rustin, was arrested in Montgomery, Alabama for "bothering white people" on a bus. Rustin played a key role in the Civil Rights Movement and helped organize the historic March on Washington in 1963.

4. On February 11, 1968, the first public television station in Pennsylvania, WQED, began broadcasting in Pittsburgh. This station has had a major impact on the arts and culture of the region and has produced many award-winning programs over the years.

5. On February 11, 1998, Pennsylvania Governor Tom Ridge signed the Clean Indoor Air Act into law. This act banned smoking in public places across the state, including restaurants, bars, and workplaces. It was a major step forward for public health and has since been emulated by other states and countries around the world.