Photo Canada

The story of the aerial mapping of Canada's vast north. From the vacant outline of three hundred years ago, the map of Canada grew into a detailed chart. Filling the blank spaces of the northern wilderness was the task of the Royal Canadian Air Force. Tri-camera Mitchells of the photo detachments worked systematically back and forth over the terrain, taking pictures of ten thousand square miles of the Earth's face in a single day. These were overlapped to make a continuous "mosaic" of the territory, from which was drawn the accurate map of Canada.