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David Rumsey Historical Map Collection
The collection of more than 150,000 maps focuses on rare 18th and 19th-century maps of North and South America, although it also has maps of the World, Asia, Africa, Europe, and Oceania. The collection includes atlases, wall maps,...
Wikimedia
Wikipedia: Distant Early Warning Line
Clearly explains how and why the DEW line was created. Map of North America shows the location of the DEW line.
Wikimedia
Wikipedia: New France
An overview of New France, from the time the French first began to explore the area until they ceded Canada to the British (Treaty of Paris, signed in 1763). Includes a discussion of the founding of Quebec City and early maps of the...