1968 Kingston Ontario Experimental Photomap 18x24” print ($40 CAD)
In the late 1960s Canada's Department of National Defence experimented with using high-altitude colour aerial photomosaics to form a map’s base layer, then graphically  highlighting and labelling roads, trails and tracks after the fact. Here we have a 1968 example of such a map from the York University map library showing Kingston, Ontario, and environs from Eel Bay to the St. Lawrence River. See the Civic Atlas' 1969 Yellowknife “orthophoto” map for a look at this technology applied in a commercial setting.