1. In 1903, the Oregon Short Line Railroad completed construction on a new line that connected Baker City to Prairie City. This new railroad line opened up the area for mining and agriculture, allowing farmers and ranchers to transport their goods more easily to markets across the country.

2. December 27, 1975 marked the opening of the Oregon Coast Aquarium in Newport. The aquarium is home to over 15,000 animals and has become a popular attraction for visitors to the Oregon coast.

3. In 1919, Oregon became the first state in the country to pass a law allowing women to serve on juries. The law was passed on December 27th, and paved the way for women's participation in the judicial system nationwide.

4. On December 27, 1937, a major flood hit the Willamette Valley, causing extensive damage throughout the region. The flood was caused by heavy rains that lasted for several days, and forced thousands of people to evacuate their homes.

5. In 1853, the Oregon Territorial Legislature officially established Yamhill County, which is located in the heart of the Willamette Valley. The county is known for its rich agricultural heritage, with crops like wine grapes and hazelnuts being major contributors to the local economy.