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An introduction   |   Map Finder   |   Explore georeferenced maps

Explore Georeferenced Maps

This video demonstrates our main viewer for georeferenced overlays, and our related Side-by-side viewer for comparing two maps on screen. It illustrates how georeferenced map layers can be found and viewed, and how you can adjust their transparency to compare them to modern day satellite imagery. The various ways of searching are shown, as are the related tools for tracing features, and measuring distances and areas.