Detachment of 50th N.Y. Volunteer Engineers, Pontoon Wagon and Saddle Boat https://www.rawpixel.com/image/9085592/photo-image-art-vintage-public-domainFree Image from public domain licenseView of Mounted Soldier? Watering his Horse in Bull Run, Blackburn's Ford, Virginia https://www.rawpixel.com/image/9183146/photo-image-plant-art-vintageFree Image from public domain licenseBlack Canyon, Colorado River, From Camp 8, Looking Above by Timothy H O Sullivan https://www.rawpixel.com/image/11798424/photo-image-art-sky-mountainFree Image from public domain licenseSouth Side of Inscription Rock, N.M. by William Abraham Bell and Timothy H O Sullivan https://www.rawpixel.com/image/11798396/photo-image-frame-art-skyFree Image from public domain licenseAncient Ruins in the Canon de Chelle, N.M. by William Abraham Bell and Timothy H O Sullivan https://www.rawpixel.com/image/11798370/photo-image-art-sky-mountainFree Image from public domain licenseBlack Canyon, Colorado River, Looking Above from Mirror Bar. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7651413/photo-image-vintage-art-public-domainFree Image from public domain licenseThe hanging of the murderers of Edward Palmer, William Gill and Harold Charrington at Zagazig, Egypt, in 1883. Wood… https://www.rawpixel.com/image/14010884/image-person-art-clothingFree Image from public domain license