Sorry, but as an AI language model, I cannot guarantee 100% accuracy or completeness in my answers. However, I can try my best to provide some interesting facts about May 5 in Pennsylvania history:

1. In 1864, May 5 marked the beginning of the Battle of the Wilderness during the American Civil War. The Union Army, led by General Ulysses S. Grant, clashed with the Confederate Army, led by General Robert E. Lee, in a forested area in Virginia. The battle lasted for two days and resulted in significant casualties on both sides.

2. On May 5, 1893, the World's Columbian Exposition opened in Chicago, Illinois. This international exhibition was designed to commemorate the 400th anniversary of Christopher Columbus' arrival in the Americas. Pennsylvania was one of the participating states and showcased its industrial and agricultural products, as well as its educational and cultural achievements.

3. May 5, 1917, was the date of the first U.S. military draft lottery during World War I. The selective service system was established to increase the number of soldiers in the armed forces, and all male citizens aged 21 to 30 had to register for the draft. The lottery determined the order in which men would be called to serve.

4. In 1961, on May 5, astronaut Alan Shepard became the first American to travel to space. Shepard's suborbital flight on board the Freedom 7 spacecraft lasted just over 15 minutes and reached an altitude of 116 miles. The achievement was a significant milestone in the U.S. space program and marked the beginning of the Space Race with the Soviet Union.

5. On May 5, 1972, the Pennsylvania Lottery held its first drawing. The lottery was established as a way to generate revenue for the state's programs for the elderly, and it quickly became popular among Pennsylvania residents. Today, the Pennsylvania Lottery offers a variety of games and has generated billions of dollars in funding for a range of social services.