The maps in question are historical topographic maps of the US from the USGS’s vast collection. ... including KMZ for viewing in Google Earth. A topographic map of Fort Smith, Arkansas, from 1887.

Using scanned maps and data from the United States Geological Survey (USGS), Esri developed an interactive tool to explore topographic maps of the US.

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 ...

WASHINGTON DC — Hikers, hunters and other outdoor recreationists will be pleased to know that free digital topographic maps are now available online from the U.S. Geological Survey.Here's the ...