The Harvard Map Collection contains one of the world’s finest collections of maps. Although their atlases are in HOLLIS, many of their individual maps are not. Som a visit is useful. As well as political and topographic maps, they have numerous thematic maps which map demographic, social, and economic other features.

Harvard Map Collection Digital Maps

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Harvard Map Collection Instagram

CartoMundi is an international collective catalogue offering about 35 000 citations for cartographic documents held in about 20 map libraries.  Also includes over 2500 digital reproductions representing Europe and Mediterranean countries.

David Rumsey Historical Map Collection

Historical Map Archive

IEG-MAPS: Server for Digital Historical Maps (Institut für europäische Geschichte - Mainz)

Periodis Web - A Historical Atlas and Gazetteer of Europe from Year 1 to 2000

Perry-Castañeda Library Map Collection

Ancient World Mapping Center

Map History / History of Cartography - WWW-Virtual Library