DOBBS & CO. Geological Map of England and Wales, [based upon Roderick Impey Murchison's map of 1843]. Dobbs & Co., [1843] Embossed hand-coloured geological map, 550 x 450 mm. dissected, mounted on linen, folded into original sheep-backed blind stamped cloth, gilt. Inevitable general light surface wear but a rare survival. The British Library and the Geological Society examples are the only institutional copies traced.