Plate 131 from The Plan of Chicago, 1909: Chicago. Elevation Showing the Group of Buildings Constituting the Proposed Civic… https://www.rawpixel.com/image/8937646/image-paper-pattern-skyFree Image from public domain licensePanoramic View of Dordrecht and the River Maas by Aelbert Cuyp https://www.rawpixel.com/image/14262948/panoramic-view-dordrecht-and-the-river-maas-aelbert-cuypFree Image from public domain licenseGezicht op Castel Sant'Angelo bij haven van Malta en schiereiland Senglea (1778) by Louis Ducros https://www.rawpixel.com/image/13738950/image-paper-cloud-artFree Image from public domain licenseTemples at Philae on the Nile. Watercolour by A. MacCallum, 1874. https://www.rawpixel.com/image/13954554/temples-philae-the-nile-watercolour-maccallum-1874Free Image from public domain licenseGezicht op de achterzijde van kasteel San Salvatore en Messina vanuit de haven (1778) by Louis Ducros https://www.rawpixel.com/image/13787919/image-paper-art-watercolorFree Image from public domain licenseThe Hospital of Bethlem [Bedlam] at Moorfields, London: seen from the north, with two figures in the foreground. Engraving. https://www.rawpixel.com/image/13990314/image-paper-cartoon-artFree Image from public domain license