Please note that Duke subscribes to a number of journal archives (examples: Periodicals Archives Online, Digizeitschriften) with deep backfiles. See a selection of subscription databases below, or browse Primary Sources A-Z. The World History Guide also provides links to subscription databases in history.
Search for maps, primary sources and books from and about the medieval and modern British Isles
The following is a selection of digital libraries that is simply meant to show the variety of content offered "free online" and to suggest search terms to use in an Internet search