The Nineteenth Century Index sources include: Nineteenth Century Short Title Catalogue (NSTC);Poole's Index to Periodical Literature; Wellesley Index to Victorian Periodicals; Periodicals Index Online and Periodicals Archive Online; British Periodicals Collection I and Collection II; American Periodicals Series; American Periodicals from the Center for Research Libraries; Cumulative Index to Niles' Register; Congressional Serial Set and American State Papers; The Proceedings of the Old Bailey; Palmer's Index to the Times; The Dictionary of Nineteenth-Century Journalism.