A periodical is simply a publication that is issued "periodically" --which can mean once a week, once a month, four times a year, or even just "occasionally." Periodicals are often categorized as scholarly, popular, trade, or alternative. All types of periodicals may be useful to historians as primary sources. Scholarly periodicals, or journals, are also useful as secondary sources.
Learn more about periodicals and journals:
Article indexes are searchable bibliographies of journal articles organized by subject.
Because the Library does not subscribe to every journal, and because not all journals are digitized, and because not all digitized journals are available in a single collection, the article indexes provide the only efficient means of identifying relevant articles from across the widest possible range of periodical publications.
Most of these article indexes include a mixture of academic and popular sources (and remember that sometimes the distinction is not clear).
There are two article indexes focused exclusively on history:
Alternate version: America: History & Life with Full Text in the classic EBSCO user interface (best for exporting more than 50 results or combining saved searches). Index of literature covering the history and culture of the United States and Canada, from prehistory to the present. The database indexes journals from 1964 to present and includes citations and links to book and media reviews.
Alternate version: Historical Abstracts with Full Text in the classic EBSCO user interface (best for exporting more than 50 results or combining saved searches). Covers the history of the world (excluding the United States and Canada) from 1450 to the present, including world history, military history, women's history, history of education, and more. Provides indexing of more than 1,700 academic historical journals in over 40 languages back to 1955.
Other article indexes useful for research in this course, depending on the focus of your research topic, include the following:
Alternate version: Bibliography of Asian Studies in the classic EBSCO user interface (best for exporting more than 50 results or combining saved searches). This on-line version of the Bibliography of Asian Studies (BAS) contains 787,165 records on all subjects (especially in the humanities and the social sciences) pertaining to East, Southeast, and South Asia published worldwide from 1971 to the present... In addition to entries compiled since 1997, the online BAS includes the full data of all of the printed volumes of the BAS issued from the 1971 up to the 1991 volumes (published in 1997)... Through the 1991 printed volume, the BAS included citations to Western-language periodical articles, monographs, chapters in edited volumes, conference proceedings, anthologies, and Festschriften, etc. Monographs published since 1992, however, have not been added to the database, and users seeking such monographs are urged to consult other general resources and databases such as WorldCat.. Use Bibliography of Asian Studies in the NEW EBSCO user interface.
Alternate version: Readers' Guide Retrospective in the classic EBSCO user interface (best for exporting more than 50 results or combining saved searches). Provides indexing of general-interest periodicals published in the United States and reflects the history of 20th century America.
Alternate version: SocINDEX with Full Text in the classic EBSCO user interface (best for exporting more than 50 results or combining saved searches). SocINDEX with Full Text offers comprehensive coverage of sociology, encompassing all sub-disciplines and closely related areas of study. These include abortion, criminology & criminal justice, demography, ethnic & racial studies, gender studies, marriage & family, political sociology, religion, rural & urban sociology, social development, social psychology, social structure, social work, socio-cultural anthropology, sociological history, sociological research, sociological theory, substance abuse & other addictions, violence and many others.