Etienne François Geoffroy. Line engraving by L. Surugue, 1737, after N. de Largillière. https://www.rawpixel.com/image/14019882/image-face-person-artFree Image from public domain licenseSandhill crane in flightTamarac National Wildlife Refuge Photo Contest 2013Photo by Jim Sinclair/USFWS. Original public… https://www.rawpixel.com/image/4029103/photo-image-plant-bird-summerFree Image from public domain licenseHenry John Temple, III (1784 - 1865), Viscount Palmusten by Camille Silvy https://www.rawpixel.com/image/14311609/henry-john-temple-iii-1784-1865-viscount-palmusten-camille-silvyFree Image from public domain licenseA Mughal courtier wearing a red turban and carrying a sword, dagger and shield. Watercolour drawing by an Indian artist. https://www.rawpixel.com/image/13961567/image-cartoon-face-personFree Image from public domain licenseElias Ashmole. Line engraving by M. van der Gucht, 1723, after W. Faithorne. https://www.rawpixel.com/image/14004057/elias-ashmole-line-engraving-van-der-gucht-1723-after-faithorneFree Image from public domain licenseFree Heo Gyun Heo Nanseolheon Memorial Park, South Korea photo, public domain travel CC0 image. https://www.rawpixel.com/image/5914896/photo-image-public-domain-free-worshipFree Image from public domain licenseMatthias Schenck, aged 24, wearing a sword and holding a book in his right hand. Line engraving. https://www.rawpixel.com/image/13972828/image-face-hand-personFree Image from public domain licenseCatoptrum microcosmicum suis aere incisis visionibus splendens, cum historia, et pinace, de novo prodit / [Johann Remmelin]. https://www.rawpixel.com/image/13974751/image-cartoon-face-personFree Image from public domain licenseCharles Leigh. Line engraving by J. Savage, 1700, after W. Faithorne. https://www.rawpixel.com/image/13985657/charles-leigh-line-engraving-savage-1700-after-faithorneFree Image from public domain licenseUnidentified man wearing wire-rimmed glasses, standing by Bisson Frères https://www.rawpixel.com/image/14306425/unidentified-man-wearing-wire-rimmed-glasses-standing-bisson-freresFree Image from public domain licenseA park ranger watches wildlife through a spotting scope. Original public domain image from Flickr https://www.rawpixel.com/image/3311356/free-photo-image-animal-cc0-countrysideFree Image from public domain licenseThomas Bartholin. Line engraving by G. Appelmans, 1671, after H. Ditmer. https://www.rawpixel.com/image/13984586/thomas-bartholin-line-engraving-appelmans-1671-after-ditmerFree Image from public domain licenseWilliam Cheselden. Line engraving by T. Cook after J. Richardson the elder. https://www.rawpixel.com/image/14009529/william-cheselden-line-engraving-cook-after-richardson-the-elderFree Image from public domain licenseJoseph Priestley. Stipple engraving by A. Tardieu after himself. https://www.rawpixel.com/image/13994449/joseph-priestley-stipple-engraving-tardieu-after-himselfFree Image from public domain licenseFree red glass ball, Christmas ornament image, public domain holiday CC0 photo. https://www.rawpixel.com/image/5906313/photo-image-background-xmas-public-domainFree Image from public domain licenseAn itinerant street vendor selling cures for corns. Coloured pen drawing. https://www.rawpixel.com/image/14005812/itinerant-street-vendor-selling-cures-for-corns-coloured-pen-drawingFree Image from public domain licenseJohn Radcliffe. Line engraving by P. Fourdrinier, 1747, after Sir G. Kneller, 1710. https://www.rawpixel.com/image/13978081/image-cartoon-face-personFree Image from public domain licenseGeorge Crabbe. Stipple engraving by J. Thomson, 1819, after H. W. Pickersgill. https://www.rawpixel.com/image/14001469/george-crabbe-stipple-engraving-thomson-1819-after-pickersgillFree Image from public domain licenseSir Christopher Wren. Line engraving by A. Bannerman after Sir G. Kneller. https://www.rawpixel.com/image/14017312/sir-christopher-wren-line-engraving-bannerman-after-sir-knellerFree Image from public domain licenseSyntagma anatomicum. Locis plurimis actum, emendatum ... / [Johann Vesling]. https://www.rawpixel.com/image/13984306/syntagma-anatomicum-locis-plurimis-actum-emendatum-johann-veslingFree Image from public domain licenseGeorges Mareschal. Line engraving by J. Daullé after L. de Fontaine. https://www.rawpixel.com/image/14007778/georges-mareschal-line-engraving-daulle-after-fontaineFree Image from public domain licenseThree Algerian women wearing veils standing, with a little unveiled girl, seated at their feet by Claude Joseph Portier https://www.rawpixel.com/image/14310008/image-face-people-public-domainFree Image from public domain licenseKing Charles I holding holding the cap in which he was executed; a skull on pedestal to right. Etching, 16--. https://www.rawpixel.com/image/13991648/image-cartoon-face-personFree Image from public domain licenseA boy sits on a stone with a bowl and a bubble pipe. Chromolithograph after J.E. Millais. https://www.rawpixel.com/image/13978871/image-face-plant-personFree Image from public domain licenseUnidentified young man, printed in vignette-style by Draper and Husted https://www.rawpixel.com/image/14309868/unidentified-young-man-printed-vignette-style-draper-and-hustedFree Image from public domain licenseMichel Eugène Chevreul. Stipple engraving by A. Tardieu, 1825, after himself. https://www.rawpixel.com/image/13978301/michel-eugene-chevreul-stipple-engraving-tardieu-1825-after-himselfFree Image from public domain licenseJean-Théophile Desaguliers. Line engraving by E. Desrochers, ca. 1720. https://www.rawpixel.com/image/13971865/jean-theophile-desaguliers-line-engraving-desrochers-ca-1720Free Image from public domain licenseAldobrandino da Siena. Line engraving by C. Faucci after G. Traballesi. https://www.rawpixel.com/image/13975772/aldobrandino-siena-line-engraving-faucci-after-traballesiFree Image from public domain licenseAlbertus Kyper. Line engraving by J. Suyderhoeff after D. Bailly. https://www.rawpixel.com/image/13997713/albertus-kyper-line-engraving-suyderhoeff-after-baillyFree Image from public domain licenseRichard Mead. Stipple engraving by J. Pass, 1816, after A. Ramsay. https://www.rawpixel.com/image/13985099/richard-mead-stipple-engraving-pass-1816-after-ramsayFree Image from public domain licenseFriedrich Gustav Jacob Henle. Reproduction of wood engraving, 1930, after [J. E.], 1902, for H & K X.A. https://www.rawpixel.com/image/14009024/image-paper-cartoon-faceFree Image from public domain licenseAn ill man being bled by a surgeon. Coloured etching after J. Gillray, 1804, after J. Sneyd. https://www.rawpixel.com/image/13951314/image-cartoon-face-personFree Image from public domain licenseTobias George Smollett. Stipple engraving by R. Page, 1825. https://www.rawpixel.com/image/14003855/tobias-george-smollett-stipple-engraving-page-1825Free Image from public domain licenseSir Samuel Garth. Line engraving by J. Goldar, 1786, after Sir G. Kneller. https://www.rawpixel.com/image/14017438/sir-samuel-garth-line-engraving-goldar-1786-after-sir-knellerFree Image from public domain licenseA man standing by a fireplace, pulling a peculiar face after taking some medicine. Coloured etching after J. Gillray. https://www.rawpixel.com/image/13961541/image-cartoon-face-personFree Image from public domain licenseCharles Bonnet. Line engraving by A. Schule after Clemens. https://www.rawpixel.com/image/13977237/charles-bonnet-line-engraving-schule-after-clemensFree Image from public domain licensePortrait of Oswell Bell by Dr John Adamson and Thomas Rodger https://www.rawpixel.com/image/14313566/portrait-oswell-bell-john-adamson-and-thomas-rodgerFree Image from public domain licenseU.S. Department of Agriculture (USDA) Secretary Sonny Perdue visits the Saginaw Valley Research & Extension Center in… https://www.rawpixel.com/image/3306820/free-photo-image-construction-workers-tractor-agricultureFree Image from public domain licenseA woman confessing to a priest. Engraving by H. Austen after J. Herbert. https://www.rawpixel.com/image/14010036/woman-confessing-priest-engraving-austen-after-herbertFree Image from public domain licenseMonsieur Bernard, Capitaine du Mascarenhas by Constant Azema https://www.rawpixel.com/image/14310869/monsieur-bernard-capitaine-mascarenhas-constant-azemaFree Image from public domain license