JSTOR Open Access Books

More than 6,000 Open Access ebooks from 85+ publishers, including Brill, Cornell University Press, De Gruyter, and University of California Press, are now available at no cost to libraries or users.

High-quality content: These titles reflect JSTOR’s high standards for quality content and are freely available for anyone in the world to use.
Ease of use: Users won’t need to register or log in, and there are no DRM restrictions or limits on chapter PDF downloads or printing. Ebooks work just like journal articles on JSTOR.
Digital preservation: The ebooks are also preserved in Portico, ensuring that they will be available to researchers in perpetuity.
Integration for libraries: Librarians can receive free MARC records and activate the titles in discovery services.

Source: website