Ontario has a rich, varied, and still expanding inheritance of maps. Many of these are attractive works of art, but they are also historical documents, records of the aspirations and achievements of the people of Ontario. Some are a representation of facts on the ground, others a setting down of future plans. They reflect the knowledge and the understanding, not always accurate, of each generation about the environment; they were and are often the basis for important decisions on matters of economic, military, and political policy. The techniques used to produce maps of Ontario in Europe...