World Book Encyclopedia Online. Encyclopedia of 1848 Revolutions - Articles about the people and ideas motivating the 1848 European revolutions.
Most articles have bibliographies.
The Encyclopedia of Cleveland History - The definitive source of information regarding the history of Cleveland, Ohio. The program includes the History of Macedonia from the times of Phillip II of Macedon and Alexander the Great, to year 2000 and the last Presidential Elections in Macedonia. Encyclopedia of Medieval Studies - Short articles with links to other web resources about European history from the Roman empire to 1300. Historical Eras and Countries - List of reference sites regarding historical periods and many different countries. The History of Ship - Encyclopedia of ships with a lot of pictures.