Another important source of cartographic supposition concerning the northwest of the continent were the sketches and maps of the De l’Isle family. Robert De Vaugondy almost directly copied his detail fro this region from this source. Although most of Manitoba is included in the area labeled “Terres Inconnues” there are other features associated with this Province shown on the map. The most important is the simplified R. Bourbon (Nelson), and Lac des Assinipoils (Lake Winnipeg). R. St. Therese (Hayes) and R. de Munck (Churchill) are here also, and all stem directly from the De l’Isle versions of earlier map-makers. Lac des Assinipouls is located too far to the southeast of its proper position, and is unrelated to the Border Lakes network which stretches far to the west from Lake Superior. These features are a grossly simplified version of La Verendrye information, and the way in which all these details are inserted shows that De Vaugondy was more interested in filling space than correlating the geographic data even then available to a “Geographe ordin’ du Roy”.
(Warkentin and Ruggles. Historical Atlas of Manitoba. map 44, p. 114)
Amérique septentrionale, dressée sur les relations les plus modernes des voyageurs et navigateurs, et divisée suivant les differentes possessions des européens. Par le Sr. Robert de Vaugondy, 1750. Drawn by Robert de Vaugondy. Printed in black ink, with coloured portions. In Robert de Vaugondy. Atlas Universel. Paris: 1757. Map No. 97.
Image Source: Library of Congress American Memory Project