Collection search - Lake Ontario. Coast Chart No. 5. Thirty Mile Point to Port Dalhoisie. Projected from a trigonometrical Survey, executed under the orders of Major C.B. Comstock, Corps of Engineers, Bvt. Brigadier Gen. U.S.A. in 1875. Published in 1878 survey of the Northern & Northwestern Lakes. Made in obedience to acts of Congress and orders from the Headquarters of the Corps of Engineers, War Department. [cartographic material]

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