|Zooming in on the Whiterock linen production area in|
Belfast, now under a housing estate.
The historical maps available are from the 6-inch County Series mapping and, for more recent options, the Irish Grid, as follows:
Edition 1 (1832 – 1846)
Edition 2 (1846 – 1862)
Edition 3 (1900 - 1907)
Edition 4 (1905 - 1957)
Edition 5 (1919 – 1963)
6” Irish Grid (1952-1969)
1:10,000 metric Irish Grid (1957-1986)
The functioning of the viewer and its ability to layer and compare the maps is pretty straightforward. I didn't encounter any difficulties with it when I had a trial run last night, but I'd recommend reading the clear instructions on the viewer home page linked above (or from the right-hand drop down menu) to get you up to speed without delay.