1. The First Indian Day was celebrated in Connecticut on September 3, 1910. This day was set aside to honor and recognize the contributions of Native Americans to the state and to promote greater understanding and respect for their heritage and culture.

2. On September 3, 1777, the Battle of Cooch's Bridge took place near what is now Newark, Delaware. Connecticut troops were among those who fought in this engagement, which was part of the larger Revolutionary War conflict.

3. Connecticut's first governor, John Haynes, died on September 3, 1654. Haynes was a prominent figure in early Connecticut history and played a key role in shaping the state's government and society.

4. The first electric trolley in Connecticut began service between Branford and East Haven on September 3, 1891. This innovative mode of transportation quickly caught on in cities and towns across the state, revolutionizing the way people traveled and commuted.

5. On September 3, 1928, a Category 4 hurricane struck Connecticut and other parts of the Northeast, causing widespread devastation and claiming more than 280 lives. The storm was one of the most destructive natural disasters in state history and led to major changes in emergency preparedness and response efforts.