Geomagnetism Fredericksburg
By Geomagnetism Program
2011 (approx.)
![United States Department of the Interior Geological Survey sign for Fredericksburg Geomagnetic Center.](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/Fredericksburg_sign.jpg?itok=4S4GwpUc)
Detailed Description
United States Department of the Interior Geological Survey sign for Fredericksburg Geomagnetic Center.
Sources/Usage
Public Domain.