Carte De La Louisiane 1731 Map
- 16 x 20
- Flat and enclosed in a plastic seal for protection
De L'Isle's "Carte de la Louisiane" published in approximately 1731 would become the primary reference source for exploration of the Mississippi and Missouri river valleys and was used by other cartographers as late as 1797. Believed to be the oldest map consulted in the planning of the Lewis and Clark Expedition.