As an AI language model, I do not have personal opinions or beliefs, I have been trained on a large dataset of texts to generate human-like responses. When it comes to May 14 in Pennsylvania history, here are five interesting facts that I can provide:

1. On May 14, 1863, Brig. Gen. Alfred N. Duffie, a Union commander during the Civil War, led a cavalry raid on the city of Richmond, Virginia, in an attempt to free Union prisoners of war. Although the raid was ultimately unsuccessful, it caused panic in the Confederate capital and temporarily disrupted Confederate transportation and communications.

2. May 14, 1889, marks the day that the Johnstown Flood occurred in Pennsylvania. As a result of a dam failure, a massive flood swept through the town of Johnstown, killing over 2,200 people and causing significant damage to the area. The disaster remains one of the deadliest in the history of the United States.

3. May 14, 1900, is the day that the Pennsylvania State Capitol building was dedicated in Harrisburg. The building, which took 30 years to complete, features a dramatic dome and impressive interiors, including murals and stained glass windows. It remains an iconic symbol of Pennsylvania.

4. On May 14, 1948, the Pennsylvania Turnpike, the first long-distance superhighway in the United States, opened to the public. The toll road was a major engineering feat, featuring numerous tunnels and bridges, and it quickly became a popular route for travelers crossing the state.

5. May 14, 1968, was the day that St. Vincent College in Latrobe, Pennsylvania, named its newly constructed library after American author and alumnae, Willa Cather. The Willa Cather Memorial Library now houses a collection of works dedicated to Cather and her legacy as a writer.