This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Lewis and Clark Columbia River. Detail of the Lewis Clark expedition map showing the Columbia River The Willamette River is identified as the Multnomah River The Snake River is Lewis's River MapofLewisandClark'sTrack AcrosstheWesternPortionofNorthAmerica published UTC derivative work Northwesthistorian PDold original upload log