Collection maintenance is an ongoing part of the conscientious evaluation of collections by professional librarians and is undertaken with as much care and consistency as the initial selection of materials. Collection maintenance helps to keep the collections current, attractive, responsive, diverse and useful to the needs of the community.
Librarians are responsible for regular evaluation of collections in their branch, unit or selection area. The Collection Development Office is responsible for replacement and refreshment lists that aid librarians in this evaluation. Main Library subject selectors review their collections for gaps in subject areas and replacement of titles in or out of print as appropriate, based on the criteria below: