The Portland Open Invitational was a professional golf tournament in the northwest United States on the PGA Tour, played in Portland, Oregon. Established by Robert A. Hudson with a $10,000 purse in 1944, it was played from 1944 to 1948 and again from 1959 to 1966. The event was hosted eight times at the Portland Golf Club, and four times at the Columbia Edgewater Country Club. First played as the Portland Open, the revived 1959 event played as the Portland Centennial Open Invitational, in honor of Oregon's centennial of statehood.
https://en.wikipedia.org/wiki/Portland_Open_Invitational