1. The Oregon Trail was completed on October 3, 1843, when the first wagon train arrived in the Willamette Valley. This trail played a significant role in the settlement of the Pacific Northwest by pioneers.

2. On October 3, 1949, Oregon State College (now Oregon State University) celebrated its centennial. The university, located in Corvallis, has been a leading public research institution in Oregon for over a century.

3. October 3, 1995, marked the beginning of the trial of anti-government activist and convicted felon, Randy Weaver, in Medford, Oregon. Weaver gained notoriety after a shootout with federal agents at his cabin in Idaho in 1992.

4. On October 3, 2014, the director and founder of the Oregon Shakespeare Festival in Ashland, Bill Rauch, won a prestigious Tony Award for his directing work on the Broadway musical, "All The Way."

5. Portland, Oregon, hosted the 2015 World Beard and Mustache Championships on October 3. The event attracts hundreds of bearded and mustached men from around the world to compete in various categories.