1. On June 13, 1842, the first train arrived in Hartford, Connecticut, marking an important milestone in the state's transportation history. The train, known as the Hartford Steam Train, was part of the newly created Hartford and New Haven Railroad.

2. June 13, 1775, was the date Connecticut formally joined the conflict against Great Britain during the American Revolution. Patriot forces under the leadership of Israel Putnam established an encampment in nearby Cambridge, Massachusetts, before joining the battle.

3. In 1868, June 13 became a significant date in the state's political history when the Connecticut Constitution's first revision was ratified. The revisions established procedures for electing government officials and outlines the relationship between the elected officials and the citizens of Connecticut.

4. Connecticut's first African American Lieutenant Governor, Eunice Groark, was born on June 13, 1946, in Norwich, CT. She served from 1991 to 1995.

5. The Discover Sea Shipwreck Museum in Fenwick Island, Delaware, officially opened to the public on June 13, 1995. The museum was created to house the artifacts discovered on the wreck of the Mary Rose in the Atlantic Ocean. The Mary Rose is believed to have sunk near Connecticut's shores in 1545.