1. In 1849, the first territorial legislature was convened in Oregon City on March 23. This marked an important milestone in Oregon's history as it allowed for the development of laws and government structures to govern the fledgling territory.

2. On March 23, 1859, Oregon was officially admitted as the 33rd state in the United States. This event marked the end of a long and tumultuous journey for Oregonians, who had fought for statehood for many years.

3. The first public library in Oregon was opened in Portland on March 23, 1864. The library was established with the goal of providing free access to information and education to all members of the community, regardless of their social or economic status.

4. On March 23, 1919, the Oregon state legislature passed a law prohibiting the sale of alcohol in the state. This occurred several years before the nationwide prohibition of alcohol, and was a reflection of Oregon's progressive values and commitment to social reform.

5. In 1971, the first Apple Computer was sold in Oregon on March 23. The Apple Computer Company, which was founded by Steve Jobs and Steve Wozniak, would go on to become one of the most iconic and influential technology companies in the world.