1. On September 21, 1953, the Siskiyou Mountains Tunnel in Southern Oregon was opened. It was the longest tunnel on the West Coast, stretching over a mile through the mountains.

2. On September 21, 1995, the Oregon Zoo welcomed four orphaned cougar cubs who were found in Montana. The cubs were hand-raised by keepers at the zoo and eventually became ambassadors for their species.

3. On September 21, 1921, the Oregon State Capitol in Salem was dedicated. It was designed in a Neoclassical style and features a gold-plated statue of a pioneer atop its dome.

4. On September 21, 2002, the first annual Tualatin Crawfish Festival took place. The festival celebrates the city of Tualatin's namesake, the Tualatin River, which is home to a large population of crawfish.

5. On September 21, 1975, the Portland Timbers soccer team played their inaugural game at Civic Stadium (now Providence Park). The team went on to play in the North American Soccer League for ten seasons and won the league championship in 1975.