Irish History Online is an authoritative guide (in progress) to what has been written about Irish history from earliest times to the present. It has been established in association with the Royal Historical Society Bibliography and London 's Past Online. It presently contains approximately 33,000 items, drawn from Writings on Irish History for 1989 to 1998 , plus all the Irish material currently held on the online Royal Historical Society Bibliography. (The latter is less comprehensive but covers a longer period of publications, up to and including 2002). Included are articles from journals, including local history journals, and collective volumes. Searches can be made by author, by subject, by publication details, or by period covered. Irish History Online is an essential resource for the study of Irish history at any level.