1. On June 5, 1904, the Biddeford and Saco Railroad Company was incorporated in Biddeford, Maine. This railway served as a major transportation hub for the area, connecting Biddeford and Saco to other cities and towns throughout the region.

2. June 5, 1921 marked the opening of the first state-owned fish hatchery in Maine, located in Greenville. The hatchery played a crucial role in the conservation and management of fish populations in the state's lakes and rivers, and it continues to operate to this day.

3. In 1959, June 5 was the date of a tragic plane crash in New Portland, Maine, in which all seven passengers and crew members were killed. The crash was later attributed to pilot error and inadequate communication equipment.

4. On June 5, 1974, the Maine Senate voted unanimously to ratify the Equal Rights Amendment to the U.S. Constitution. While the amendment ultimately fell short of being ratified nationwide, Maine was one of 35 states to formally endorse it.

5. June 5, 1995 saw the dedication of the Holocaust Human Rights Center of Maine in Portland. The center serves as a museum, education center, and research facility focused on the history and lessons of the Holocaust and human rights abuses around the world.