Articles and journals about various topics.
Freely available, open access titles and articles.
Articles, books, and primary sources from open access publishers.
Mostly pre-print articles about STEM subjects and economics. Open Access. Check with your professor before using because many of these articles have not undergone a complete peer review process.
Academic ebooks.
This database works in much the same way as DOAJ (Directory of Open Access Journals). Note that some titles are in a language other than English.
Articles about history and culture in the United States
Articles, books, and primary sources from open access publishers.
Books about art, freely available online
To specifically search the Bibliography of the History of Art. Go to: http://www.getty.edu/research/tools/bha/
Books on a variety of subjects. See a Librarian for ways to obtain full access.
Search for sources freely available in JSTOR and Artstor.
E-books on multiple subject. Freely available to all.