Chart of the River St. Lawrence : from Bic Island to Quebec Part II / Great Britain. Hydrographic Office, issuing body. Bayfield, Henry Wolsey, 1795-1885, surveyor. Potter, J. D. (John Dennett), active 1830-1892, bookseller. Great Britain. Admiralty. Maps. Nautical charts. London : Published at the Admiralty, [1869] 1 map ; 75 x 60 cm folded 49 x 66 cm. Relief shown by hachures and spot heights; depths shown by soundings in fathoms. Notes on tides. Mounted on linen. "Published according to Act of Parliament at the Hydrographic Office of the Admiralty December 1st 1837." "Price Eighteenpence." "Sold by J.D. Potter, Agent for the Admiralty Charts, 31 Poultry & 11 King St. Tower Hill." Early Canadian nautical maps were referred to as "Bayfield charts" in honour of Henry Wolsey Bayfield who began in the early 1800s charting the waterways of Canada. Nautical charts -- Saint Lawrence, Gulf of. Nautical charts -- Québec (Province) Nautical charts. Saint Lawrence, Gulf of -- Navigation -- Maps. Québec (Province) -- Navigation -- Maps. Canada -- Maps. Atlantic Ocean -- Gulf of Saint Lawrence. Canada. Québec.