The collections contain books on many subjects relevant to historians, including the history of Communism, Fascism, Marxism, political parties and elections, Slavery, Trade Unions, Women, and general economic history. The collection is also located on the 6th floor adjacent to the History Collection. The Royal Historical Society Bibliography on CD-ROM, a comprehensive database of references to literature on the history of Britain, Ireland and the British abroad, is available in the Middlesex South Reading Room. The database includes about 250,000 records detailing most of the books and articles on these subjects published between 1901 and 1992, and many from before then. This bibliography is held in the Library in hard copy form from 1993 onwards.
Explanatory leaflets are available.
Currently PCI indexes over 10 million articles from 3,035 journals. Also available is the International Bibliography of the Social Sciences, which indexes articles and books in the social sciences from 1951 to date. Currently PCI indexes over 8.5 million articles from 2,074 journals. Also, the International Bibliography of the Social Sciences, which indexes articles and books in the social sciences from 1951 to date, is available . Theses subject enquiries are also dealt with in the Middlesex South Reading Room, where there are means for discovering all theses produced in the University of London, including those on historical subjects.