1. The first World Series game was played in Philadelphia on October 10, 1903. The Boston Americans defeated the Pittsburgh Pirates, 7-3, in front of a crowd of 16,242 fans.

2. On October 10, 1774, the First Continental Congress, a group of delegates from twelve of the thirteen British colonies in America, concluded its proceedings in Philadelphia's Carpenter's Hall. The Congress issued a statement, calling for a boycott of British goods, in response to the Intolerable Acts, which were passed by the British Parliament.

3. Pennsylvania became the second state to ratify the United States Constitution on October 10, 1787. The state's convention voted 46-23 in favor of the document, paving the way for its adoption.

4. On October 10, 1913, the Liberty Bell was moved from Independence Hall to the nearby Pennsylvania Building, which was part of the Pennsylvania Railroad's exhibit at the Panama-Pacific International Exposition. The bell was returned to Philadelphia on July 4, 1915, and placed in a new pavilion, which was specially constructed to house it.

5. The Philadelphia Phillies won their first National League pennant on October 10, 1915, defeating the Boston Braves, 5-0. The Phillies went on to lose the World Series to the Boston Red Sox in five games.