Grand Canyon Investigations: 131 Years in the Field
![Image: Grand Canyon Investigations: 131 Years in the Field](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/Picture_001.jpg?itok=lwAmjGq4)
Detailed Description
Staff at the USGS Central Region Library created two displays for an open-house in celebration of National Library Week, April, 2010. This display on USGS scientific investigtations of the Grand Canyon displays field records, historical photography,historical surveying equipment, and publications from the science areas of biology, geology, geography, and water.
Sources/Usage
Public Domain.