Aftermath of irrigation boom and subsequent collapse of cotton in California, 1921. Nyland, California. Sourced from the… https://www.rawpixel.com/image/12243259/photo-image-plant-boom-skyFree Image from public domain licenseThe fatal collapse of the Gloucester-Road bridge over the railway in West Croydon. Wood engraving, 1865. https://www.rawpixel.com/image/14019968/image-cartoon-person-artFree Image from public domain licensePlate XXXI. Cantilevers Complete. 9th July, 1889. by John Fergus and Photophane Co https://www.rawpixel.com/image/14313063/image-water-public-domain-landscapeFree Image from public domain licenseOngeluk van graaf Johan Maurits op de brug van Franeker, 1665 (1665) by Jan de Visscher, Philips Wouwerman and Pieter Jansz… https://www.rawpixel.com/image/13785101/image-dog-paper-horseFree Image from public domain license