Special Collections and Archives in the Oviatt Library is the home of CSUN's rare book and periodical collections, as well as its archival and manuscript collections. Archival and manuscript collections can consist of many different kinds of materials, including correspondence, diaries, maps, university records, organizational records, photographs, and audio or video recordings. The department is comprised of several areas within the Oviatt Library which were independently established between 1973 and 1996. Special Collections was established in 1973 to house the Library’s manuscripts, rare books, periodicals, maps, prints, and art. Special Collections holds over 35,000 cataloged items and 150 manuscript and archival collections which support the University's curriculum, as well as the research interests of faculty and students on campus. In addition to supporting curricular needs at California State University, Northridge, collecting is focused on several topical areas including American literature, California and the West, children's literature, the history of printing and publishing, human sexuality, music, 19th and 20th century Europe, radio and television scripts, religion, theater and motion pictures, and United States history. The Urban Archives was established in 1979 through the efforts of university faculty, concerned community organizations, and civic leaders. Its purpose is to collect historically significant records of voluntary associations, local political figures, prominent citizens, and civic leaders which have contributed to the growth of Los Angeles County, and influenced government and public thinking since the beginning of the late nineteenth century. The collections document urban development in Los Angeles and the San Fernando Valley, education, journalism in Southern California, labor and guild history, minority and ethnic studies, politicians and political movements, social service and women in Los Angeles. The University Archives is the repository for the historical papers of California State University, Northridge's administration, Faculty Senate, schools and departments, and student activities on campus. The International Guitar Research Archives (IGRA) was founded in 1980, and now holds one of the world’s largest collections of guitar sheet music, especially works for solo guitar, ensemble pieces for multiple guitars, and ensemble pieces for guitar and other instruments. IGRA also holds accompanying resources documenting the lives and careers of numerous guitarists and professional associations, as well as other guitar-related materials. The Old China Hands Archives was established in 1996 to preserve and publicize the heritage of the many people from other countries and cultures who have resided and worked in China. The Archives holds a growing collection of materials generously donated by former Old China Hands, including correspondence, diaries, photographs, postcards, books, periodicals, newspapers, and other materials.