1. 1805: Lewis and Clark camped on the Oregon side of the Columbia River for the first time. They spent the night at a spot they named "Fort Rock," near present-day Arlington.

2. 1874: Southern Oregon University (then known as Ashland Academy) opened its doors to students. The school was originally established by the Methodist Episcopal Church as a boarding school for students of all ages and backgrounds.

3. 1933: The Bonneville Dam on the Columbia River began generating electricity for the first time. The dam was built as part of Franklin D. Roosevelt's New Deal program and played a crucial role in powering the Pacific Northwest.

4. 1956: The Oregon State Beavers football team beat the USC Trojans 20-7 in Corvallis, sparking a rivalry that remains strong to this day. The game marked the first time that the Beavers had beaten the Trojans in 18 years.

5. 2018: The Camp Fire, one of the deadliest and most destructive wildfires in California history, began to burn in Butte County. Although the fire was located in California, it had a significant impact on Oregon, with smoke from the wildfire blanketing much of the state for weeks.