Picot, V. M., Fisher, J., & Joly, J. R. (1770). A view of O'Sullivan's Cascade, which falls between the mountains of Glena & Toomish into the Lake of Killarney: To his Grace the Duke of Northumberland, this plate is humbly inscribed by His Grace's obliged humble servant , Jonathan Fisher. J. Fisher, Landscape painter, Great Ship Street.

Picot, Victor Marie, et al. A View of O'Sullivan's Cascade, Which Falls Between the Mountains of Glena & Toomish into the Lake of Killarney: To His Grace the Duke of Northumberland, This Plate Is Humbly Inscribed by His Grace's Obliged Humble Servant , Jonathan Fisher. J. Fisher, Landscape painter, Great Ship Street, 1770.