Princeton University Library's digitized collections of Slavic, East European, and Eurasian materials. These collections include many rare and unique materials, a selection of which are remotely accessible to interested researchers through the Library’s digital portals. Princeton’s most intensive…
Digital library of the National Library of the Republic of Karelia, containing many digitized local publications of the Soviet period. It also has a lot of publications and manuscripts in Finnish language.
A lot of interesting and informative digital projects based on archival documents from seven major archives of Saint-Petersburg, covering plenty of well-known and less-known topics in Russian and Soviet history.