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:
Alfred Jacob Miller Green River Oregon Walters . The Green River of Wyoming Oregon Territory to Miller winds through spectacular mountains to join the Colorado River Miller trekked through the Rockies for one season and noted many difficulties especially for those who tried to climb the highest peaks only to experience giddiness