Start here if you're working on a historical topic. Historical Abstracts is a full-text database of scholarly journal articles on the history of the world (excluding the US and Canada). Provides selective indexing of historical articles from more than 1,800 journals in over 40 languages back to 1955 as well as the full text of more than 300 journals and over 130 books.

Start here if you're looking for secondary materials on literary topics. The MLA international bibliography is the largest bibliographical database of articles, book chapters, dissertations, conference proceedings focused on literature, linguistics, philology, cultural studies. International in scope.

Largest digital library of current Italian scholarship in the humanities and social sciences - full text searchable, includes books, journals, and conference proceedings.

Torrossa is your best bet for Italian language scholarly ebooks. Use the database to do keyword searching across the Torrossa digital library.

Cross-searchable library containing the full text and abstracts of classic and newly published Oxford University Press books.

Multidisciplinary collection of ebooks published by Cambridge University Press.

Including New Cambridge Modern European History, Cambridge Economic History of Europe. You can download individual chapters as PDF's.

Stanford Libraries' largest collection of English language academic ebooks.

Another big collection of academic (mostly) ebooks