Here is information about Sheet 19:
This Inch to the Mile map is split between Counties Londonderry and Antrim, and covers the area from Maghera and Tobermore eastward to Gracehill and northward to Kilrea.
Features include the towns or villages of Ahogill, Kilrea, Maghera, Portglenone and Tobermore. The Moravian settlement of Gracehill is included and other features include the old Central Derry railway through Maghera. On the reverse we include a more detailed map of the centre of Maghera.
It is not possible to list the many hamlets, farmsteads and other topographical features shown on these maps. However, you may find it useful if we list the towns and principal villages or church parishes that are included on this map. Links are given for those for which detailed large-scale maps are also available.