The following guide draws on the archives of the Ordnance Survey
held in the National Archives and aims to highlight the research
potential of the collections of an agency which has been
creating maps of the country since the early nineteenth century.
Since 1824 the Ordnance Survey has been concerned with making
maps of Ireland. In the period between 1824 and the present day
it has created very large quantities of archives, some of which
have already been transferred to the National Archives. The
archives transferred consist of part of the administrative
archives, most of the archives generated by the mapping of the
country at the scale of six inches to the mile (1:10560) and
town plans at various scales. The Ordnance Survey continues to
hold a very large quantity of records which will be transferred
to the National Archives over the next few years. These consist
of administrative records and records created in the survey or
making of other maps at various scales, including 1-inch and
25-inch maps. The Ordnan