Washington https://dor.wa.gov/open-business/choose-ownership-structure
Oregon https://www.oregon.gov/business/Pages/choose.aspx
Idaho https://business.idaho.gov/legal-structure/
Washington https://www.sos.wa.gov/corps/nonprofitinformation.aspx
Oregon https://sos.oregon.gov/business/Pages/nonprofit.aspx
Idaho https://www.idahononprofits.org/starting-a-nonprofit.html