Sheet of Studies of Nine Insects (1660–1665) by Jan van Kessel. Original from The Rijksmuseum. Digitally enhanced by… https://www.rawpixel.com/image/2228579/nature-artwork-jan-van-kesselFree Image from public domain licenseDragonfly, a Grasshopper, Houseflies, a Carrion Beetle, a Flower Longhorn Beetle, and Other Insects (1575–1580)… https://www.rawpixel.com/image/3112585/free-illustration-image-flower-beetle-insectFree Image from public domain licenseThe earthworm and the common housefly : in eight letters / by James Samuelson ; assisted by J. Braxton Hicks. https://www.rawpixel.com/image/14006081/image-cartoon-art-patternFree Image from public domain licenseThe earthworm and the common housefly : in eight letters / by James Samuelson ; assisted by J. Braxton Hicks. https://www.rawpixel.com/image/13989463/image-paper-cartoon-plantFree Image from public domain license