1. Oregon achieved statehood on November 15, 1859, becoming the 33rd state in the USA.

2. On November 15, 1940, the first section of the Bonneville Dam, located on the Columbia River in northern Oregon, began operation. The dam provides electricity, flood control, and water for irrigation, and it is a popular spot for fishing and recreation.

3. The Oregon State Capitol in Salem was dedicated on November 15, 1938. The Capitol is known for its distinctive Art Deco architecture, and it houses the offices of the Governor, Secretary of State, and State Treasurer, as well as the chambers of the House of Representatives and the Senate.

4. On November 15, 1991, the Portland Trail Blazers defeated the Cleveland Cavaliers 105-95 in the first NBA game ever played in Portland's new arena, the Rose Garden. The arena is now known as the Moda Center and is home to the Trail Blazers and other events.

5. The Tillamook Burn, a massive wildfire that burned over 350,000 acres in northwestern Oregon in 1933 and 1939, began on November 15, 1933. The burn changed logging practices in the region and led to the creation of the Tillamook State Forest.