https://www.kpic.com/news/local/us-bank-is-leaving-the-us-bancorp-tower-in-downtown-portland
https://www.koin.com/news/portland/u-s-bank-leaving-big-pink-tower-in-downtown-portland/
The U.S._Bancorp_Tower could have been the first 50-55 story building in Oregon, but it wasn't permitted to have more than 42 floors. https://en.wikipedia.org/wiki/U.S._Bancorp_Tower#Design
https://unicoprop.com/properties/us-bancorp-tower , https://usbancorptower.com/
https://en.wikipedia.org/wiki/List_of_tallest_buildings_in_Portland,_Oregon
