There is a map in the possession of T. P. Thompson of New Orleans, who has a notable collection of books and documents on the early history of this city, dated March 1, 1827, and drawn by Captain W. T. Poussin, topographical engineer, showing the route of a proposed canal to connect the Mississippi River and Lake Pontchartrain, curiously near the site finally chosen for that great enterprise nearly a hundred years later.

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