1. On April 6, 1917, the United States declared war on Germany, officially entering World War I. The declaration followed months of tension and submarine attacks on American ships.

2. In 1984, the Maine State Legislature passed a law designating April 6 as Arbor Day in Maine. The day is dedicated to promoting the planting and care of trees, and is celebrated annually with tree-planting events and educational activities.

3. On April 6, 1820, Maine became a state, separating from Massachusetts and becoming the 23rd state in the United States. The move followed decades of political and economic disputes between Maine and Massachusetts, and was seen as a victory for the fledgling state.

4. In 1973, the Penobscot Bay Press, a local newspaper based in Stonington, Maine, first went to press. The newspaper covers news and events in the coastal communities of Deer Isle, Stonington, and Isle au Haut, and is renowned for its coverage of local events and issues.

5. On April 6, 1993, the U.S. Department of Agriculture declared Maine's Kennebec County a disaster area due to a severe ice storm that had hit the area earlier in the year. The storm caused widespread power outages and property damage, and led to massive efforts to clear fallen trees and debris from roads and public spaces.