Henry Roberts (1756 - 1796), 'Plan of adventure bay on van Diemen's Land...' and 'View of the south side of adventure Bay.', copper plate engravings on a single sheet; some hand colouring, from cook & King: 'A voyage to the Pacific Ocean, for making Discoveries in the Northern Hemisphere. Performed under the Direction of Captains cook, Clerke and Gore.....', c.1784, 20.5 x 25 cm; framed 54 x 43 cm overall.