Lac Derg dans le Comte Tirconnel ou Done Gal. Plan of the Island and Saint Patrick's Purgatory, Lough Derg, County Donegal.
Copper engraving without coloring.
Size: 16 x 17 cm (paper), 13 x 15 cm (image).
Condition: Very Good, with a fold mark (as issued).
100% original, not a reproduction.