DUNN, Samuel. Scientia Terrarum et Ceolorum: Or, the Heavens and Earth Astronomically and Geographically Delineated, [London: Robert Sayer, 1772]. Large engraved twin-hemisphere map, hand-coloured in outline, on 4 sheets mounted on linen, each sheet 525 x 630mm. (browned, discoloured and creased, a few tears without loss affecting title, severely frayed), on wooden rollers.