This bibliography presents the patterns of writings in the Yoruba language between 1820-1970 and so traces the intellectual development of that society. It includes early publications, printed works, bibles, religious tracts, readers and some modern works written in Yoruba. Some writings about the language in English are also included. Most of the entries have been sourced from the Ibadan University library, the IAI and SOAS institutions in London, and the Schomberg Collection and the Library of Congress in the USA; or from publishers catalogues in Nigeria, the CSS Press and University Press Plc. The editor provides for each item, organised by subject discipline and also listed alphabetically, a bibliographic description, and location of the work. Additionally the volume includes a contents list of important rare works, or works of literary significance; and the bibliography is fully indexed.