World.- Purdy (John, hydrographer) A Chart of the World, on Mercator's Projection; with the Tracks of the more Distinguished Modern Navigators. Regulated throughout, according to the best Scientific Determinations, large four-sheet wall map, 1821.

World.- Purdy (John) A Chart of the World, on Mercator's Projection; with the Tracks of the more Distinguished Modern Navigators. Regulated throughout, according to the best Scientific Determinations, third edition, large engraved wall map of the world, engraving with some original hand-colouring on 4 sheets of wove paper without watermarks, not joined, each sheet approx. 635 x 950 mm. (25 x 37 1/2 in), browning and surface dirt from previous adhesive still slightly visible, minor marginal nicks and tears, old signs of damp-staining, unframed, Richard Holmes Laurie, 1821

? Impressively detailed chart illustrating the great voyages of discovery from Columbus up to the time of publication.