1. On November 23, 1863, President Abraham Lincoln delivered the keynote address at the dedication ceremony for the Soldiers' National Cemetery in Gettysburg, Pennsylvania. This famous speech, now known as the Gettysburg Address, has become one of the most iconic speeches in American history.

2. In 1943, the US Army's Camp Reynolds, located near Greenville, Pennsylvania, was used to train soldiers for amphibious warfare during World War II. The camp was named in honor of Lieutenant Colonel David D. Reynolds, who was killed in action during the invasion of North Africa in 1942.

3. On November 23, 1979, a fire broke out at the Jolly Roger Hotel in downtown Philadelphia, killing eleven people and injuring more than 30 others. The tragedy led to changes in local fire codes and safety regulations.

4. In 1913, the Liberty Bell was moved from Independence Hall to its current home in a glass pavilion on Independence Mall in Philadelphia. The move was necessary due to concerns about the bell's integrity and the increasing crowds of visitors to the hall.

5. November 23, 1988, marked the opening of the Andy Warhol Museum in Pittsburgh, Pennsylvania. The museum is the largest museum in the United States dedicated to a single artist and showcases Warhol's work across a range of mediums, including painting, sculpture, film, and photography.