Copper Map Plate Detail
![Image: Copper Map Plate Detail](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/copper_plates__culture_separate.jpg?itok=IlNJfhzV)
Detailed Description
Detail of a “culture” separate, which was represented in the color black on a USGS topographic map.
Sources/Usage
Public Domain.
Detail of a “culture” separate, which was represented in the color black on a USGS topographic map.
Public Domain.