Ordnance Survey of Northern Ireland produced mapping data that is amongst the most detailed and comprehensive in the world and, in 2005, has began to digitize the complete set of historical maps dating back to the 1830s together with the Public Records Office of Northern Ireland.
Ordnance Survey of Northern Ireland produced mapping data that is amongst the most detailed and comprehensive in the world and, in 2005, has began to digitize the complete set of historical maps dating back to the 1830s together with the Public Records Office of Northern Ireland.