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Leen Helmink Antique Maps: Finest Early Maps & Prints
Vintage maps showing what maps looked like before photography and computers. User has the ability to search for maps of all of the continents.
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Cartographic Images: Late Medieval Maps 1300 1500
Find some incredible maps of early cartographers. What did they know of the world then? Did they know it was round? Take a look at this site.
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Maps of the American Revolution
Although this is a "selling" site, it is a good resource that not only supplies images of maps of the times, but provides the background to the map - when it was published, what was going on at the time, etc.