North American Arctic Regions, Diderot, 1780.

"Partie De La Carte du Capitaine Cluny Autur d'un ouvrage anglois intitule American Traveller…1769" by Didier Robert de Vaugondy. Published in the 'Vaugondy Supplement' to Diderot's Encyclopedia, 1772 or 79. Northern western hemisphere on Mercator's projection showing North America and Europe and the supposed North-West passage between Hudson and Baffin Bay and the Arctic Ocean. Several folds as published, margins of about 1 cm or more, apart from lower left where the map was bound in. Size 41.5 x 21 cms plus margins. Ref E9437