Croatia-in-English.com - A useful site for those who are looking for info on Croatian history, genealogy, culture and other related topics. Includes historical maps.

FEEFHS Map Room - 50 detailed maps of Germany, Austria-Hungary, Russia, the Balkans, and the Baltics from the 1882 Blackie and Sons atlas, all available at the site of the Federation of East European Family History Societies. The same site also includes a nice Genealogy Resource Directory.

Some info and discussion about the Croatian Middle Ages

Croatia

List of Resources by Country and Region

Croatian Timelines and Scenarios

Croatian Points of Divergence