Canadian Geographical Names: By the Canadian Geographical Names Board.
Index of German-Polish and Polish-German Names of the Localities in Poland and Russia: Anna Sluszkiewicz provides maps and a bibliography in addition to the index.
Roman Gaul: A gazetteer of places and people of Roman Gaul.
The Locus Project: Aims to produce a new Historical Dictionary of Irish placenames and tribal names to replace Fr Edmund Hogan's Onomasticon Goedelicum.