Covers: 1980-.Offers the full text of reference sources in all disciplines. Users can search for specific words or concepts or browse by subject area. Special tools include a concept map that charts the occurrences of search and related terms across the collection and an image search. Topic pages covering people, places, events, or ideas pull together information from across several different reference sources.

Covers: 1800s-. A collection of core journals and books in the humanities, social sciences, sciences, and mathematics. Most journals are digitized back to the first date of issue. Note that most titles in these archival collections are only digitized after a three-to-five-year time lag so that recent issues are not always available through JSTOR.
JSTOR now includes ebooks, images, and primary sources as well as journals.