Rainbow Lake seen from road to Carlton Tunnel near Leadville, Colorado. Sourced from the Library of Congress. https://www.rawpixel.com/image/12336017/image-cloud-plant-sky Free Image from public domain license
Rainbow over Cascais Bay, Cintra, Portugal by Francis Seymour Haden https://www.rawpixel.com/image/8986449/rainbow-over-cascais-bay-cintra-portugal-francis-seymour-haden Free Image from public domain license
The Ute Pass. Rainbow Fall, 60 ft. One mile from Manitou House, Manitou, Col. by Bryon H Gurnsey https://www.rawpixel.com/image/14292725/photo-image-water-public-domain-nature Free Image from public domain license
Rainbow Falls, Ute Pass, Winter Scene by Alexander Martin https://www.rawpixel.com/image/14294693/rainbow-falls-ute-pass-winter-scene-alexander-martin Free Image from public domain license
The Ute Pass. Rainbow Fall, 60 ft. One mile from Manitou House, Manitou, Col. by Bryon H Gurnsey https://www.rawpixel.com/image/14293282/photo-image-person-water-public-domain Free Image from public domain license
Niagara - Rainbow Arch Prospect Park - Winter by George Barker https://www.rawpixel.com/image/14287223/niagara-rainbow-arch-prospect-park-winter-george-barker Free Image from public domain license
Rainbow Falls, Ute Pass, Manitou Springs, Colorado by William Henry Jackson https://www.rawpixel.com/image/14280841/rainbow-falls-ute-pass-manitou-springs-colorado-william-henry-jackson Free Image from public domain license
Rainbow Pitta (Pitta Iris) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds of… https://www.rawpixel.com/image/321146/free-illustration-image-bird-rainbow-iris Free Image from public domain license
Indented-striped Wrasse from The Natural History of British Fishes (1802) by Edward Donovan. Original from the New York… https://www.rawpixel.com/image/431392/free-illustration-image-vintage-fish-illustrations-sea-life-rainbow-background Free Image from public domain license
1. Rainbow-fish (Labrus Julis) 2. Dropped Wrasse (Labrus Guttatus) from Ichtylogie, ou Histoire naturelle: génerale… https://www.rawpixel.com/image/938826/fish-illustrations Free Image from public domain license