government documents, maps, sound and visual recordings, in addition to books. Approximately 75% of the library's circulating collection is stored in its 45-foot-tall library retrieval system, which was installed between 2008 and 2012, when the library building underwent a renovation and expansion, adding more than 140,000 square feet; also, the addition of the system, which can store approximately a million items, removed the need for book stacks, freeing up space for other uses.
The library building was constructed in three phases in 1953, 1959 and 1971 and used to only house the J. Paul Leonard Library. After the expansion and renovation, the Sutro Library was moved to the fifth and sixth floors of the building.
==== Sutro Library ====
The Sutro Library is a branch of the California State Library on the main campus of the university. The foundation of the library's collection was assembled by former San Francisco mayor Adolph Sutro. The library was deeded to the State of California by Sutro's heirs with …
