Historical Topographic MapsThe Historical Topographic Map Digitization project was initiated by the Ontario Council of University Libraries (OCUL) Geo Community in 2014. It is a 2.5 year initiative to digitize and georeference early-to-mid 20th century historical topographic maps covering the province of Ontario at the scales of 1:25,000 and 1:63,360.
For more info check out https://ocul.on.ca/topomaps/about-maps/