1. On February 20, 1857, Oregon officially became a state, becoming the 33rd state in the United States. The state's capital was originally located in Oregon City before being moved to Salem in 1859.

2. In 1929, the Oregon Historical Society was founded on February 20. The society is dedicated to preserving and sharing the history of Oregon through exhibitions, educational programs, and a research library.

3. On February 20, 1943, the famous "Portland Rosebuds" hockey team played its last game before being disbanded due to World War II. The Rosebuds were the first American team to compete for the Stanley Cup in 1916 but ultimately lost to the Montreal Canadiens.

4. In 1962, the Oregon State Highway Commission approved the construction of the Astoria-Megler Bridge, which spans the Columbia River between Astoria, Oregon, and Megler, Washington. The bridge was completed in 1966 and is the longest continuous truss bridge in North America.

5. On February 20, 2016, Portland-based art therapy nonprofit Art in Mind marked its 10th anniversary. The organization offers free and low-cost art therapy services to individuals and groups throughout the Portland area, promoting mental health and wellbeing through artistic expression.