1. In 1972, Massachusetts adopted a new state constitution on June 12th. The new constitution reorganized the state's legislative branch and modernized the document for the first time since the original constitution was implemented in 1780.

2. On June 12th, 1987, the Massachusetts Turnpike celebrated its 30th anniversary. The highway, also known as Interstate 90, runs from Boston to the western border of Massachusetts and is a major transportation route in the state.

3. The famous poet Anne Bradstreet was born on June 12th, 1612 in England. She migrated to the Massachusetts Bay Colony with her husband and children in 1630, and later became the first published poet in the American colonies.

4. The USS Constitution, a historic warship berthed in Boston Harbor, made its first voyage on June 12th, 1798. The ship, also known as "Old Ironsides," played a major role in the War of 1812 and is now a popular tourist attraction.

5. On June 12th, 1939, the Boston Red Sox played their first game under the newly-built Fenway Park lights. The lights were installed to allow for night games and to increase revenue for the team. Today, Fenway Park is the oldest ballpark in Major League Baseball and is renowned for its unique features and historic significance.