1. Charts. Ontario, Lake. Lake Ontario from Prince Edward Point, Ont., and Stony Point, N. Y., to Grindstone Island, St. Lawrence River; Lake Ontario coast chart 1. Scale 1:80,000. Bookmark Corporate/Agency Authors: Northern and Northwestern Lakes Survey, Engineer Department, and War Department Publisher: Northern and Northwestern Lakes Survey Date: Mar. 22, 1927 SuDoc number: W 33.7/3:01/7