The Cascade Booksellers Association (CBA) is a non-profit association of professional retail book dealers in the Pacific Nort ... hwest who provide a variety of services. Each dealer is independent and offers their own unique inventory which may include general stock in all categories or may focus on one or more specialties. Although each dealer may operate their business with diverse policies, each CBA member is required to conduct their business fairly and honestly. Every year we host the Rose City Book and Paper Fair in Portland. This is Oregon's largest book fair, attracting dealers and customers from across the country. read more