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 (Rocky Mts), 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 contemporary cartographers including Senex, Popple, and De l' Isle, thus perpetuating the myth through the 18th century. The map also includes balloon-shaped Lakes Superior and Michigan. This is the scarce first English edition, engraved by Herman Moll, with numerous interesting English text notations. Includes a photocopy of the source book's title page.

References: Schwartz & Ehrenberg #81, p. 142; Kershaw #306.

Condition: B

Map has been backed with very fine 18th century linen to repair a long binding tear and was rebound at that time. Narrow margins as issued, with even toning and faint offsetting.