The book details a survey on institutional, legal and ethical factors as precursors of consortium building readiness among university libraries in Southwestern Nigeria. It examined consortium building initiatives in Nigeria, the failures, challenges, readiness of university libraries to build a sustainable consortium building and prevent future failures well as the institutional, legal and ethical factors necessary for long lasting consortium building. The study found out that organisation/library culture, ICT literacy skill of library staff, automation/digitisation level of library, finance among others are germane institutional factors for consortium building. Legal issues should centre on areas like: dispute resolution among member, dissolution of consortium, non-disclosure of log-in-option and cash contribution. Business ethics was found to be paramount than professional ethics for potential consortium library members. The study finally made recommendations critical for sustainable consortium building among university libraries in Nigeria.