JSTOR is an online library of journals, academic ebooks, and primary sources. It contains the full-text of more than 2,600 journals from 1,200 publishers, with publication dates ranging from 1665 to 2022 (for certain titles). Journals are available in more than 75 disciplines in the humanities, social sciences, sciences and mathematics. Also, there are more than 85,000 ebooks from academic publishers. The ebooks work just like journals, offering unlimited use and DRM-free chapter downloads in PDF format. JSTOR includes more than two million primary sources across four collections.