Gezicht op de ruïne van Friedrichstein (1832 - 1859) by Rudolf Bodmer, Adolf Lasinsky and Karl Baedeker https://www.rawpixel.com/image/13778442/image-paper-cloud-horseFree Image from public domain licenseNevers (Vue Prise du Chamin de Fer) by Auguste Hippolyte Collard https://www.rawpixel.com/image/14325621/nevers-vue-prise-chamin-fer-auguste-hippolyte-collardFree Image from public domain license