1. On April 7, 1934, a major strike began in Lancaster County that would eventually lead to the creation of the Amish and Mennonite-affiliated Goodville Mutual Casualty Insurance Company in 1939. The strike was led by the United Textile Workers and resulted in major labor reforms in the area, including increased wages and improved working conditions.

2. On this day in 1776, William Thompson was appointed the First Captain of the First Pennsylvania Battalion in the American Revolutionary War. Thompson's battalion would go on to fight in several major battles, including the Battle of Brandywine, and helped secure a crucial victory for the Continental Army.

3. In 1848, Pennsylvania's first state-supported institution for the deaf and hard of hearing, the Pennsylvania Institution for the Deaf and Dumb, opened in Philadelphia. The school would later move to Germantown and eventually become the Pennsylvania School for the Deaf.

4. April 7, 1933, marked the opening of the 1933 World's Fair, also known as the Century of Progress International Exposition, in Chicago. Pennsylvania was well-represented at the fair, with exhibits showcasing the state's industrial and agricultural ingenuity.

5. On this day in 1779, British forces commanded by General William Tryon raided and burned the town of Danbury, Connecticut, during the American Revolutionary War. Pennsylvania troops under the command of General John Sullivan helped defend against the attack and won a key victory at the Battle of Ridgefield.