This Amazing Collection of Historical Maps Just Got Easier to See | WIRED - 3 views
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John Evans on 04 May 15"IT JUST GOT way, way easier to search and browse the US Geological Survey's collection of historical topographic maps, thanks to a new online map viewer. These maps-more than 178,000 of them-date back to 1880, and they cover the entire country. Best of all, they're free to download for anyone who wants to, say, check out the contours of the Grand Canyon or study the urbanization of the San Francisco Bay Area (see below)."
