Recherche dans la collection - Map showing works constructed & controlled by the Department of Public Works Ontario, on the waters, tributary to the Trent Canal valley. Signed - R.P. Fairbairn, Engineer, Public Works. March 1st 1904. Traced by WGP, approved [Illegible] for Ontario Department of Lands and Forests, Survey Branch, March 6th, 1942. [cartographic material]