Many specialized projects are available online; see this list and the second and third items below for suggestions.

• EuroDocs
• UCLA Library Guides on Europe
  An excellent introduction. Check under the Primary Sources tab.
• Washington University Library Guides on Europe
• World History Sources
  Scholarly reviews of online primary source archives. Select Europe.
• European Navigator
  Provides high quality research and educational material on the history of European integration(the EU).
• Google Books
• HathiTrust Digital Library
• Eighteenth Century Collections Online
• Early English Books Online
• Nineteenth Century Collections Online – Not Held
  “Each collection can be purchased separately or together as one package. Complaining that a collection of this magnitude is not fully comprehensive is a bit churlish but it is fair to say that some scholars will find it more useful than others, as this review will show. I will discuss how the collection has been sorted and presented and end with a few observations about where this leaves us.” Reviews in History