This is a georeferenced raster image of a printed paper map of the Barrie, Ontario region (Sheet No. 105), published in 1928. It is the first edition in a series of six maps, published between 1928 and 1950. It is one of the first maps that was created through the use of aerial imagery as a topographic tool.
The survey for this map was conducted in 1927 using imagery taken by the Royal Canadian Air Force, as part of a national topographical survey originally commissioned by Department of Militia and Defence in 1904. This survey was completed by the Geographical Section, General Staff, Department of National Defence.
Hover over the map with your cursor to magnify an area, and scroll to zoom in and out