The U.S. Geological Survey is scanning 250,000 of its historic maps to put online. The U.S. Geological Survey (USGS) is nearly halfway through its release of more than 250,000 historical topographic ...

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 ...

A map of Chicago, Illinois, imprinted in 1913 from the United States Geographical Survey’s historical topographic map collection. Image courtesy of the USGS Map lovers, rejoice! The United States ...

The United States Geological Survey has nearly completed its project to digitize over 200,000 topographical maps and create a free, searchable online archive The United States Geological Survey has ...

Good thing it’s almost the holiday weekend and you don’t need to be productive because the USGS just launched a heck of a time-wasting website. Now you can explore cities through beautiful old maps, ...

The United States Geological Survey (USGS) continues to support the delivery of its digital maps through Avenza Systems Inc.‘s PDF Maps app. It has widened the selection to more than 120,000 US Topo ...

No audio available for this content. This graphic represents the planned US Topo map production schedule for the next three- year revision cycle. The US Topo project repackages data from national GIS ...

In what the agency hopes will spur a major leap in American geoscience, the U.S. Geological Survey has released a new mapping tool that allows anyone to peer into the earth beneath their feet. Dubbed ...