1. On December 22, 1896, the first train arrived at the newly constructed Union Station in Portland, Oregon. The station was the largest railroad terminal in the Pacific Northwest and played a vital role in the city's economic development and growth.

2. In 1940, Oregon State defeated Duke University in the first-ever Pineapple Bowl football game held in Honolulu, Hawaii. The bowl game was created to promote tourism and boost the economy of the Hawaiian Islands during the Great Depression.

3. On December 22, 1944, a B-24 bomber plane crashed into the side of Mount Hood, killing all 10 crew members on board. The wreckage was not discovered until the following spring and remains at the crash site as a memorial to the fallen soldiers.

4. In 1988, the Oregon State Board of Education made a landmark decision to require teaching about the Holocaust in all public schools across the state. This decision was a significant step in promoting awareness and education about genocide and human rights.

5. December 22, 2008, marked the beginning of a massive snowstorm that hit the Pacific Northwest, leaving parts of Oregon with record-breaking snowfall and causing widespread power outages and transportation disruptions. The storm brought over a foot of snow to Portland, making it the heaviest snowfall in over 40 years.