It Just Got Easier to See a Cool Historical Maps Collection | WIRED
▻http://www.wired.com/2015/05/amazing-collection-historical-maps-just-got-easier-see
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).
#cartographie #cartographie_historique #cartothèques #catalogues