Unrecorded state of De L'Isle's seminal map, substantially updated with information on the British Colonies at the conclusion of the Revolutionary War.
De L'Isle's map is regarded as one of the most important works in the history of Cartography and is of the highest importance for its treatment of a number of different regions. The information in the West includes details from Vermale's manuscript map of 1717, the routes of St. Denis and De Soto though Texas and many place names in New Mexico and on the Mississippi. The treatment of the Missouri is also excellent and includes a point where according to Indian Reports the Spanish cross the river on horseback to trade with the nations of the Northwest and bring back yellow iron.
The map is also of considerable note for its coverage of the Mississippi and its tributaries, and the Great Lakes, drawing upon Franquelin's map of 1688. The rendering of Texas was a distinct improvement over earlier maps, with improvements on the river systems and a much more accurate charting of the coast. It also provided credible routes for Moscoso (1540 and 1542), La Salle (1687) and de Leon (1689).
The map marked the first appearance of Texas on a map (Mission de los Tiejas). Florida is treated as a very distinct archipelago, with de Soto's routes shown. This edition of the map is substantially updated along the eastern seaboard, with many new placenames not located on the earlier editions.
Jean-Claude Dezauche (fl. 1780-1838) was a French map publisher. Initially, his work focused on engraving music, but he later turned primarily to cartography. His is best known for editing and reissuing the maps of Guilluame De L’Isle and Philippe Buache, two of the most skilled mapmakers of the eighteenth century. He acquired the plates of these two men’s work in 1780 from Buache’s heir, Jean-Nicolas Buache. Dezauche's business received a further boon when he received a privilege to sell the charts of the Dépôt de la Marine. His business was carried on by his son, Jean-Andre Dezauche.