It is a directory of the Library of the University of California, published in 1918 to facilitate the use of the books by guiding their location and arrangement. Moreover, it described the resources by which one could easily access the books. Contents include: Historical Sketch Description of Building Classification Catalogue Book Stack Circulation Department Reserved Book Room Inter-Library Loans Special Collections Seminar Rooms Departmental Libraries Reference Department Accessions Department Rules and Regulations

Vols. for 1971- include annual reports and statistical summaries.