1. The first automobile to cross Maine's Kenebec River was on October 5, 1900. A man named Frank Dingley drove the car across the river during the Great Maine Automobile Run, which was a race across the state to promote the use of automobiles.

2. On October 5, 1865, the University of Maine was officially established. The school was originally named the Maine State College of Agriculture and the Mechanic Arts and was founded based on the Morrill Land-Grant Acts.

3. Ogunquit Playhouse, a historic summer theater in Maine, opened its doors on October 5, 1933. Over the years, the theater has hosted performances by many famous actors and musicians, including Bette Davis, Walter Matthau, and Ethel Merman.

4. In 1839, the Treaty of Webster-Ashburton was signed on October 5th, resolving a boundary dispute between the United States and Great Britain that had been ongoing for many years. The treaty established the boundary between Maine and Canada's New Brunswick province.

5. The Maine-based shoe company, L.L. Bean, opened its first retail location outside of Maine on October 5, 1983. The store was located in Tysons Corner, Virginia, and marked the beginning of the company's expansion outside of New England.