USGS Topographers at Work
![Image: USGS Topographers at Work](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/FG051-300.jpg?itok=AXyQt_ge)
Detailed Description
USGS topographer with plane table and alidade in the Alabama Hills near Mt. Whitney, California.
Sources/Usage
Public Domain.
USGS topographer with plane table and alidade in the Alabama Hills near Mt. Whitney, California.
Public Domain.