Recherche dans la collection - Survey of the banks of the Ottawa or Grand River from the head of the Long Sault to the entrance of the North River shewing the situation of the Grenville, Chûte à Blondeau and Carillon Canals. Henry DuVernet, Lieut. Coll, Royal Staff Corps. Royal Staff Corps Office, Chatham, August the 30th 1831. [cartographic material]