1. 1963: Martin Luther King Jr. delivers his famous "I have a dream" speech at the Lincoln Memorial in Washington D.C. on this day, which has become a defining moment in American civil Rights history. This event had a significant impact on the civil rights movement across the US, including in Oregon, where it helped inspire many to fight against racism and discrimination.

2. 1987: The Oregon Museum of Science and Industry (OMSI) moves into its new and larger location on the east bank of the Willamette River in Portland. The museum had been founded in 1944 and had operated in various locations before settling into its current home, which has become one of the main attractions in Portland.

3. 1995: A wildfire breaks out in the Columbia River Gorge area, which eventually destroys over 17,000 acres of forest and vegetation. The fire sparked major discussions about forest management and conservation efforts in Oregon, leading to many reforms and changes in state forest policies.

4. 2008: TriMet, the public transit agency serving the Portland metropolitan area, introduces its new MAX Green Line light rail service, which extends eastward from downtown Portland to Clackamas County. This new line helped improve transportation options for many residents in the region, reducing traffic congestion and promoting sustainable transportation.

5. 2018: Oregon becomes the first US state to pass legislation that automatically registers eligible voters when they obtain or renew a driver's license or state ID. This law, known as "Motor Voter," is designed to increase voter participation and has been adopted by several other states in the years since.