7Harbison, Peter. "Beranger and Bigari: Lost and Found!" Archaeology Ireland 16.4 (2002): 30.
A few of these drawings may be seen online here. Harbison explains the provenance of the Berganger and Bigari drawings: "Sir William Wilde, himself a Connacht man of many parts, had searched in vain for any original pictorial material surviving from the tour, and could only point his readers towards the engravings in Grose's Antiquities for evidence of its artistic achievements. But what Wilde did not know was that, around 1810, many of the original views (mainly by Bigari), as well as plans and details (largely by Beranger), had been bought from Burton Conyngham's heirs by Austin Cooper, who, along with members of his family, had already made copies of many of them in the years 1794 and 1799. These copies have a special value of their own because many of them were based on originals that have not managed to survive, perhaps disposed of in the nineteenth century by Cooper's son, also named Austin, who 'unlike his father was devoid of all literary taste.' It is a hopeful thought that these lost drawings may yet turn up in some unexpected attic, but we can regard ourselves as fortunate that those originals and copies which did survive were acquired by the National Library in 1994, where they can, incidentally, be studied via the internet on the online Catalogue of the Library's Prints & Drawings Department."