1. In 1945, President Harry Truman signed the United Nations charter in San Francisco, California, which established an organization dedicated to the promotion of international cooperation and peace.

2. On August 2, 1819, Maine became the 23rd state to join the United States of America. This event marked the separation of Maine from Massachusetts, and the establishment of the state's own government.

3. In 1890, the last known wolf in Maine was killed in the town of Grand Lake Stream. This event marked the end of the wolf population in the state, which had been hunted extensively throughout the 19th century.

4. On August 2, 1863, the Battle of Gettysburg came to an end after three days of intense fighting. The battle resulted in a Union victory, and is considered a turning point in the Civil War.

5. In 1947, the SS Katahdin, a steamship that had served as a passenger and freight vessel on Maine's largest lake, Moosehead Lake, was retired from service. Today, the Katahdin is preserved as a museum ship and a popular tourist attraction.