1700 / 1718 L'Amerique Septentrionale Dressee sur les Observations de Mrs. de l'Academie Royale des Sciences
DESCRIPTION
One of the most influential maps of colonial North America produced during the early 18th century, Guillaume de l’Isle’s L’Amerique Septentrionale marks a pivotal shift from speculative seventeenth century geography toward a more scientific approach to cartography. Drawing upon the latest reports from explorers, missionaries, traders, and military officials, the map became one of the most accurate and politically significant depictions of the continent of its era.
This example of de l'Isle's landmark map of North America is the 7th state Issued in Paris circa 1718 during the height of French colonial expansion. The state is identified by the visible removal of the Louis Renard Amsterdam imprint beneath the title cartouche and Guillaume de l'Isle's elevated title of "Premr Geographe due Roy," (Premier Geographer to the King).
Geography and Exploration
The map encompasses North America from the Arctic southward to the Caribbean and Central America, including the Great Lakes, the Mississippi Valley, Florida, New Mexico, and portions of the Pacific Coast. Particularly significant is De l’Isle’s treatment of California as a peninsula rather than an island, helping to reverse one of the most persistent cartographic misconceptions of the seventeenth century. The Mississippi River system is depicted with unusual sophistication for the period, reflecting French exploratory efforts throughout the interior continent.
Throughout the map, extensive annotations identify Native American nations, colonial settlements, rivers, mountain ranges, and trading regions. The Great Lakes are rendered in a highly influential form, while French territorial ambitions dominate much of the interior geography. English colonial settlements remain largely confined to the Atlantic seaboard, visually reinforcing France’s expansive claims across the Mississippi Valley and central North America.
French Imperial Cartography: Territorial Claims, and Exploration Networks
Guillaume de l’Isle served as Premier Géographe du Roi under the French crown and was among the foremost scientific cartographers of the early eighteenth century. His maps were intended not only to improve geographic accuracy, but also to reinforce French territorial ambitions in North America during an era of mounting imperial rivalry with England and Spain. That political purpose is evident throughout the map, particularly in the depiction of “Caroline” within the sphere of French influence and the extension of French geographic claims from Canada through the Great Lakes and Mississippi Valley to the Gulf Coast. At the same time, Spanish territory is confined largely to Florida, Mexico, and the Gulf Coast west of the Mississippi toward Texas, visually emphasizing France’s claim to the continental interior.
The map drew upon information gathered through decades of French exploration and trade networks extending deep into the interior of North America. Reports from explorers and voyageurs such as Louis Jolliet, Jacques Marquette, La Salle, Henri de Tonti, and Pierre Le Moyne d’Iberville contributed to the mapping of the Mississippi Valley, Great Lakes, and Gulf Coast, while the expanding French fur trade supplied geographic intelligence from trappers, missionaries, and Indigenous trading partners operating throughout the Great Lakes and upper Mississippi regions. By synthesizing these sources into a unified geographic framework, de l’Isle produced one of the most influential and politically consequential maps of colonial North America issued during the early eighteenth century.
Decorative Elements and Legacy
The richly engraved allegorical cartouche in the upper right corner celebrates the abundance and perceived wealth of the New World through figures representing Indigenous peoples, trade goods, wildlife, and imperial symbolism. This decorative flourish contrasts with the map’s otherwise restrained scientific character and exemplifies the balance between artistry and geographic rigor that distinguished French cartography during the period.
L’Amerique Septentrionale remains one of the foundational maps of early eighteenth century North America and an enduring landmark in the history of French cartography. Its combination of scientific advancement, political significance, and visual appeal has made it one of Guillaume de l’Isle’s most recognizable and sought after maps.
CONDITION
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