Johann Heinrich Menni. Line engraving by S. Furck after himself. https://www.rawpixel.com/image/14008610/johann-heinrich-menni-line-engraving-furck-after-himselfFree Image from public domain licenseMonarch caterpillar on Asclepias sp. leaf at Chichaqua Wildlife Area, July 20, 2019. (USDA/NRCS photo by Darren K Manthei).… https://www.rawpixel.com/image/3260844/free-photo-image-caterpillar-animal-asclepiasFree Image from public domain licenseGiuseppe Cervi. Line engraving by J. à Paloma after V. de Iriarte. https://www.rawpixel.com/image/13997665/giuseppe-cervi-line-engraving-paloma-after-iriarteFree Image from public domain licenseFree gold Christmas presents image, public domain holiday CC0 photo. https://www.rawpixel.com/image/5905169/photo-image-background-xmas-public-domainFree Image from public domain licenseWilliam Harvey. Stipple engraving by W. Holl after W. von Bemmel, 1657. https://www.rawpixel.com/image/14013799/william-harvey-stipple-engraving-holl-after-von-bemmel-1657Free Image from public domain licenseMark Akenside. Mezzotint by E. Fisher, 1772, after A. Pond, 1754. https://www.rawpixel.com/image/13977519/mark-akenside-mezzotint-fisher-1772-after-pond-1754Free Image from public domain licenseWilliam Henderson. Lithograph by F. Schenck after W. Crawford, 1845. https://www.rawpixel.com/image/14000189/william-henderson-lithograph-schenck-after-crawford-1845Free Image from public domain licenseFortunata Alinari, Contante. Contralte. by Michele Petagna https://www.rawpixel.com/image/14306881/fortunata-alinari-contante-contralte-michele-petagnaFree Image from public domain licenseJohann Caspar Lavater. Stipple engraving by W. Ridley, 1805. https://www.rawpixel.com/image/13992715/johann-caspar-lavater-stipple-engraving-ridley-1805Free Image from public domain licenseUnidentified baby superimposed within a leaf by L K Showman and Read https://www.rawpixel.com/image/14308627/unidentified-baby-superimposed-within-leaf-showman-and-readFree Image from public domain licenseSir Frederick Pollock, president of the Photographic Society Club. Photograph. https://www.rawpixel.com/image/13999570/sir-frederick-pollock-president-the-photographic-society-club-photographFree Image from public domain licensePrenthandelaar in gesprek met een klant (1825) by Bar and Pierre Langlumé https://www.rawpixel.com/image/13772971/prenthandelaar-gesprek-met-een-klant-1825-bar-and-pierre-langlumeFree Image from public domain licenseUnidentified little boy seated, holding a large hoop by Désiré Durand https://www.rawpixel.com/image/14306550/unidentified-little-boy-seated-holding-large-hoop-desire-durandFree Image from public domain licenseSamuel Christian Friedrich Hahnemann. Stipple engraving by A. Wachsmann. https://www.rawpixel.com/image/13987655/samuel-christian-friedrich-hahnemann-stipple-engraving-wachsmannFree Image from public domain licenseSir William Watson. Stipple engraving by T. Ryder after L. F. Abbott. https://www.rawpixel.com/image/13992811/sir-william-watson-stipple-engraving-ryder-after-abbottFree Image from public domain licenseFree close up drone flying in the air image, public domain CC0 photo. https://www.rawpixel.com/image/5920950/photo-image-background-public-domain-blueFree Image from public domain licenseGreen lizard on wood stump. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301557/free-photo-image-animal-animals-images-pictures-blendFree Image from public domain licenseThomas Martyn. Stipple engraving by J. Farn, 1795, after S. Drummond. https://www.rawpixel.com/image/13979591/thomas-martyn-stipple-engraving-farn-1795-after-drummondFree Image from public domain licenseWilliam Salmon. Line engraving by R. White, 1687, after himself. https://www.rawpixel.com/image/13987475/william-salmon-line-engraving-white-1687-after-himselfFree Image from public domain licenseDie Pathologie und Therapie der psychischen Krankheiten : für Aerzte und Studirende / von W. Griesinger. https://www.rawpixel.com/image/14017066/image-face-person-artFree Image from public domain licenseA blurry shot taken at sunrise, featuring a traffic light trail on a bridge in Djuröbron. Original public domain image from… https://www.rawpixel.com/image/3283607/free-photo-image-road-light-bridge-pngFree Image from public domain licenseTobias George Smollett. Stipple engraving by W. Holl, 1819. https://www.rawpixel.com/image/14003624/tobias-george-smollett-stipple-engraving-holl-1819Free Image from public domain licenseFrancis Glisson. Line engraving by W. Dolle, 1672, after W. Faithorne. https://www.rawpixel.com/image/13998768/francis-glisson-line-engraving-dolle-1672-after-faithorneFree Image from public domain licenseJohn Wolcot [Peter Pindar]. Stipple engraving by P. Roberts after J. Barry. https://www.rawpixel.com/image/14003889/john-wolcot-peter-pindar-stipple-engraving-roberts-after-barryFree Image from public domain license