Specimens of Rocks. Proof of an Illustration for Wright's 'Globe Prepared for Man'. https://www.rawpixel.com/image/9202831/image-vintage-illustration-public-domainFree Image from public domain licenseAt Pont y pair, Bettws-y-Coed, North Wales by Francis Bedford https://www.rawpixel.com/image/14316596/pont-pair-bettws-y-coed-north-wales-francis-bedfordFree Image from public domain licenseCapel Curig, Pont-y-Gelli. [North Wales] by Francis Bedford https://www.rawpixel.com/image/14286405/capel-curig-pont-y-gelli-north-wales-francis-bedfordFree Image from public domain license