•ASEN (Association for the Study of Ethnicity and Nationalism). The major scholarly association: http://www.lse.ac.uk/collections/ASEN/Default.htm
•The Nationalism Project (run by Eric GE Zuelow). Idiosyncratic, but useful: http://www.nationalismproject.org/
•Stanford Encyclopedia of Philosophy. Article with links: http://plato.stanford.edu/entries/nationalism/
•Internet Modern History Sourcebook. Good for pre-copyright texts, e.g. by Herder and Mazzini: http://www.fordham.edu/halsall/mod/modsbook17.html
•Institute for Human Science: htpp://www.iwm.at