1. Battle of Machias: On July 3, 1775, the Battle of Machias took place in present-day Maine, marking the first naval engagement of the American Revolution. A group of colonial patriots in Machias, angered by British attempts to control the timber trade, attacked and captured HMS Margaretta.

2. Statehood Day: July 3 is celebrated as Statehood Day in Maine, commemorating the day in 1820 when Maine became the 23rd state in the United States. The celebration usually includes parades, fireworks, and other festivities across the state.

3. First Bicycle Race: On July 3, 1878, the first bicycle race in Maine was held in Portland. The race, which consisted of two heats of one mile each, was won by a local shoemaker named Frank Lonergan.

4. L.L. Bean's Birthday: Leon Leonwood Bean, the founder of L.L. Bean, was born on July 3, 1872, in the town of Greenwood, Maine. L.L. Bean is now a globally renowned outdoor retailer, with its flagship store located in Freeport, Maine.

5. First Commercial Radio Station: On July 3, 1925, WCSH radio station made its first broadcast in Portland, Maine, becoming the first commercial radio station in the state. The station is now part of the Tegna media company and continues to operate as a local news and entertainment source.