The Scarborough passing through the Chatham Islands 1788 By Thomas Gilbert From the collections of the State Library of New South Wales [DSM/Q981/26A1] (Detail from Plate VI, 'Chatham Islands' facing page 48, in 'Voyage from New South Wales to Canton, in the year 1788 : with views of the islands discovered' by Thomas Gilbert, London 1789) (Mitchell Library)