Colorado. "Round up" on the Cimarron, a photochrom print from c. 1898, showing one of the large musters of cattle done in… https://www.rawpixel.com/image/7665216/image-art-vintage-public-domainFree Image from public domain licenseEcho Cliffs, Cañon of the Grand River, Glenwood Extension, D.&R. G.R.R. by William Henry Jackson https://www.rawpixel.com/image/11800537/photo-image-art-sky-mountainFree Image from public domain licenseMammoth Hot Springs on Gardiner's River. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7652451/photo-image-vintage-art-public-domainFree Image from public domain licenseHot Spring and Castle Geyser. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7652910/photo-image-vintage-art-public-domainFree Image from public domain licenseQueen Victoria and her family: a composition carte de visite. Photograph. https://www.rawpixel.com/image/14009156/queen-victoria-and-her-family-composition-carte-visite-photographFree Image from public domain license