Collection search - Survey of the Northern & Northwestern Lakes. Made in obedience to Acts of Congress and orders from Headquarters of the Corps of Engineers, War Department. Lake Ontario. Projected from a trigonometrical survey executed under the orders of Major C.B. Comstock, Corps of Engineers, Bvt. Brig. Gen. U.S.A., in 1873, 1874, and 1875. Published in 1877. [with sailing directions]. [cartographic material]