1. On February 26, 1857, the Oregon Constitutional Convention assembled to adopt the first state constitution. This document became the foundation for Oregon's government and was signed on November 9, 1857.

2. In 1879, the first railroad bridge over the Columbia River was completed on February 26, connecting Oregon's town of Kalama to Kayak Point in Washington.

3. The University of Oregon was established on February 26, 1876, as a state-funded public university. Initially, it was known as the Oregon State University until the name was changed in 1887.

4. February 26, 1915, marked the opening of the first ski resort in the United States known as the "Skyline Skiway" located on Mount Hood. The resort featured the first ski lift in the country, which was a rudimentary rope tow system.

5. On February 26, 1960, the Portland Civic Auditorium held the first indoor track and field meet. The event saw some of the biggest names in U.S. track and field, including Billy Mills, Ralph Boston, and Wilma Rudolph. The meet is considered to be historical because it paved the way for the development of the National Indoor Track and Field Championships.