Troll along (h/t Co Kildare Online Electronic Historu Journal) to the National Archives new online section showing the papers of the Chief Secretary of Ireland. So far they’ve put up a catalogue for the first five years, 1818 to 1822 inclusive, with images of some pages, including 17 maps and drawings.
The second map shows the Ballyteigue Canal in Co Wexford, the third is John Killaly’s map of Lough Derg in 1820 and the fourth (which is as far as I’ve got in looking through them) shows Cappa Pier at Kilrush. They’re a bit small when seen online, but you can select (and save a copy of) a PDF version.
Big it up for the National Archives and for Professor Francis J Crowley, whose bequest made this possible.