Scanned copy of the 1929 USGS Three Sister’s, Oregon, quadrangle
![Scanned copy of the 1929 USGS Three Sister’s, Oregon, quadrangle](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/thumbnails/image/1929_oregon_map.jpg?itok=BAiaJQHP)
Detailed Description
Scanned copy of the 1929 USGS Three Sister’s, Oregon, quadrangle. Scale 1:25,000 – from the USGS Historical Topographic Map Collection
Scanned copy of the 1929 USGS Three Sister’s, Oregon, quadrangle. Scale 1:25,000 – from the USGS Historical Topographic Map Collection