USGS Topographers
![Image: USGS Topographers](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/FF018-300.jpg?itok=h7mbMoLq)
Detailed Description
USGS topographic field party, circa 1925, with a Wye level on a tripod and two stadia rods.
Sources/Usage
Public Domain.
USGS topographic field party, circa 1925, with a Wye level on a tripod and two stadia rods.
Public Domain.