Darwin on Geology
February 13, 2012 | Scientific American
An article on the Scientific American website reviews a few of Charles Darwin's interesting experiences... USGS Historical Topographic Map Collection
April 3, 2012 | USGS
"The goal of the Historical Topographic Map Collection was to create an electronic collection of... Historical Map Collection Now Online
September 13, 2011 | USGS
"Nearly 90,000 high resolution scans of the more than 200,000 historical USGS topographic maps, some... Spectacular Fossils of the Green River Formation
October 17, 2011 | Geology.com
Some of the most spectacular Eocene fossils are found in the Green River Formation of... | 
