Gale Reference e-Library Contains over 400 Reference books in the Social Sciences and Humanities, including Nations and Nationalism : A Global Historical Overview. Try a search for Nationalism to start, add in your country.
Oxford Reference Online: Contains several thousand e-reference books including Companion to Irish History, Companion to Scottish History
Ernest Gellner, from Oxford Dictionary of National Biography
Guide to Irish and UK Historical Newspapers
19th Century British Newspapers Archive: 50 titles from the Victorian era.
Pravda Digital Archive: Searchable, digital version of Pravda back to 1912. In Russian only.