"Carte que les Gnacsitares ont Dessine sur ... Carte de la Riviere Longue et de quelques Autres qui se Dechargent dans le Grand Fleuve Missisipi …", Lahontan, Louis Armand
Subject: Colonial Midwest
Period: 1728 (published)
Publication: Nouveaux Voyages de M. le Baron de Lahontan dans l'Amerique Septentrionale
Color: Black & White
11.7 x 4.4 inches
29.7 x 11.2 cm
This is one of the most influential, and fanciful, maps in American cartographic history. It purports to show the Riviere Longue flowing from the mountains in the west, home to the Gnacsitares Indians, and connecting to the Mississippi River. On the western side of the mountains is another river, presumably flowing into the Pacific. Lahontan's concept was copied by virtually all 18th century cartographers including Moll, Senex, Popple, and Delisle, thus perpetuating the myth. The map also includes balloon-shaped Lakes Superior and Michigan. This is the third state of the smaller version.
References: Kershaw #301.