ATLA Religion Database and Catholic Periodical and Literature IndexATLA Religion Database Identifies journal articles and books on all aspects of Religious Studies. Indexing for some journal titles extends back into the 19th century. Indexes publications from 1949-present. Catholic Periodical and Literature Index identifies journal articles, book chapters, church publications, papal documents, and electronic resources about the Roman Catholic Church and its history. Indexes publications from 1981-present. For retrospective coverage: Print edition extends coverage back to 1968, with Catholic Periodical Index covering 1930-1966.