Recherche dans la collection - Windsor, Walkerville & Ford, Ont. Essex County. Revisions to harbour head lines adopted by O. in C. dated 2nd June 1913...O. in C. dated 28th May, 1930. Public Works of Canada. Chief Engineer Draughting Office, P.W.D. Ottawa, October 1925. D.P.W. No. 2059-4A. [cartographic material]