YBP Library Services provides books and supporting collection management and technical services to libraries throughout the world. The company provides comprehensive approval plans, flexible notification/slip plans, strong continuations services a web-based bibliographic information database. It is a Baker & Taylor company. Baker & Taylor has one of the largest in-stock book, video and music inventories in the United States, and tools such as Title Source II streamline selection management of print and audiovisual materials. YBP Library Services is located in Hopkinton, N.H.