The document provides an overview of library catalogues. It examines the Western Libraries catalogue and the University of Toronto Libraries catalogue, comparing their strengths and weaknesses in terms of authority, purpose, scope, and organization. A trial search on "teen suicide" was conducted in both catalogues to assess their usefulness for the topic. The Western Libraries catalogue was found to have two interfaces, while the University of Toronto catalogue had one, though both were capable of retrieving relevant results through effective limiters.