1. The Battle of Gettysburg ended on July 24, 1863, with Union troops victorious. The battle, which lasted three days, was one of the bloodiest of the Civil War, with a total of 51,112 casualties.

2. The world's first commercial oil well was drilled in Titusville, Pennsylvania on July 24, 1859. The well was drilled by Edwin Drake, who was hired by the Pennsylvania Rock Oil Company to find oil that could be used for lamps and other products.

3. On July 24, 1901, the City of Pittsburgh was struck by a devastating flood. The flood, caused by heavy rain, caused extensive damage and claimed the lives of over 100 people.

4. Hersheypark, a popular amusement park located in Hershey, Pennsylvania, opened on July 24, 1907. The park started as a picnic area for the employees of the Hershey Chocolate Company and has since grown into one of the most popular amusement parks in the United States.

5. Ulysses S. Grant, the 18th President of the United States, visited Philadelphia on July 24, 1873, as part of his tour of the country. During his visit, he met with supporters and gave a speech at Independence Hall, where the Declaration of Independence was signed.