That's a really useful and highly educational offering from Google.

If you’ve ever wondered which trails Lewis & Clark traveled for their famous expedition, or looked for maps of the best schools in your region, you may have found yourself scouring the web without much luck. The best results for your search may come from governments, nonprofits and businesses, but historically that information has been hard to find or inaccessible to the public. Well, now, with the new Google Maps Gallery, it’s easier for you to find maps like those all in one place. Google Introduces Maps Gallery: Interactive Digital Atlas [google-latlong.blogspot.com]

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