1. On September 19, 1787, Maine was officially recognized as a state by the Continental Congress. This made Maine the 23rd state to be admitted to the union and marked the end of a long struggle for statehood.

2. September 19, 1819, saw the birth of Hannibal Hamlin in Paris, Maine. Hamlin went on to become a U.S. Senator, Governor of Maine, and Vice President of the United States under Abraham Lincoln.

3. In 1941, on September 19, the first Lend-Lease aid from the United States arrived in Russia via convoy to the northern Soviet port of Arkhangelsk. This aid was critical to helping the Soviet Union fight Nazi Germany during World War II.

4. September 19, 1984, marked the dedication of the Allagash Wilderness Waterway in northern Maine, which encompasses over 90 miles of rivers and lakes. The waterway is known for its pristine wilderness and abundant wildlife, including moose, bald eagles, and loons.

5. On September 19, 2000, Maine's first cloned cow, named Vandi Dairy Perfect, was born at the University of Maine. This marked a significant milestone in the field of agriculture and genetic research, as cloning had never been successfully achieved in the state before.