Research Guides: Historical Maps: Europe + UK

Irish Historical Maps LibGuide University College Dublin (UCD)

Ordnance Survey Ireland "National Townland and Historical Map Viewer"
National Mapping Agency of Ireland with free map viewer. Includes historic 6 Inch as base map.
Ordnance Survey
The national mapping agency of Great Britain open data viewer - for modern comparison maps
Historical Maps of Ireland
From UK National Archives collection
Maps of Scotland
Maps from the National Library of Scotland
Historic Ordnance Survey Maps
Catalogue of Ordnance Survey historical maps. Collection includes sources relating to all of Ireland until the Anglo-Irish Treaty in 1922, and Northern Ireland from 1922 until present. Includes Calendar of Papal Registers, Britain and Ireland.

National French Library/ Bibliothèque nationale de France
Map collection of the National French Library/ Bibliothèque nationale de France
Perry-Castañeda Library Map Collection University of Texas
Digitized collection of France maps