Sir Richard Owen. Mezzotint by W. Walker, 1852, after H. W. Pickersgill, 1843. https://www.rawpixel.com/image/13993867/sir-richard-owen-mezzotint-walker-1852-after-pickersgill-1843Free Image from public domain licenseSir William Lawrence. Wood engraving after T.D. Scott, 1867. https://www.rawpixel.com/image/13985680/sir-william-lawrence-wood-engraving-after-td-scott-1867Free Image from public domain licenseMan producing Lokta bark paper, Kailash, Bajhang District, Nepal, October 2017. https://www.rawpixel.com/image/6198599/photo-image-paper-public-domain-peopleFree Image from public domain licenseBuste, mogelijk van Dionysos met druiven in het haar, in de Vaticaanse Musea te Vaticaanstad, Italië (1851 - 1890) by… https://www.rawpixel.com/image/13755626/photo-image-paper-face-frameFree Image from public domain licenseOutline of a face expressing veneration; profile of a male face expressing veneration or a state of attention. Etching by B.… https://www.rawpixel.com/image/14015044/image-paper-cartoon-faceFree Image from public domain licenseA Somali man sits next to his herd of goats at Bakara Animal Market in Mogadishu, Somalia, on 13 April 2013. https://www.rawpixel.com/image/3373671/free-photo-image-agriculture-animal-apparelFree Image from public domain licenseBoris Petrovich Nikolaev and Dmitriĭ Nikolaevich Zasukhin. Photograph. https://www.rawpixel.com/image/14006595/boris-petrovich-nikolaev-and-dmitri-nikolaevich-zasukhin-photographFree Image from public domain licenseFree playing guitar image, public domain musical instrument CC0 photo. https://www.rawpixel.com/image/5905507/photo-image-public-domain-wooden-living-roomFree Image from public domain licenseSaint Mary (the Blessed Virgin) with the Christ Child. Engraving by W.H. Watt, 1846, after Raphael. https://www.rawpixel.com/image/13973974/image-face-frame-jesus-christFree Image from public domain licenseChang and Eng, conjoined twins, seated. Photograph, c. 1860. https://www.rawpixel.com/image/13960153/chang-and-eng-conjoined-twins-seated-photograph-1860Free Image from public domain licenseSt. Francis. From a supposedly unique etching by Murillo. by Nicolaas Henneman https://www.rawpixel.com/image/14283956/st-francis-from-supposedly-unique-etching-murillo-nicolaas-hennemanFree Image from public domain licenseGeorge William Frederick Howard, 7th Earl of Carlisle. Soft-ground etching by J. G. Lairs after J. Slater. https://www.rawpixel.com/image/13985989/image-paper-face-frameFree Image from public domain licenseHenry Constantine Jennings, an eccentric collector. Stipple engraving by R. Cooper, 1821. https://www.rawpixel.com/image/14004009/image-paper-cartoon-faceFree Image from public domain licenseJesus Christ as the Redeemer. Line engraving by G.M. Pitteri after G.B. Piazzetta. https://www.rawpixel.com/image/14001409/image-face-jesus-christ-personFree Image from public domain licenseSaint Vincent de Paul: he rescues a baby abandoned in the snow. Line engraving by P. Baquoy after N. A. Monsiaux. https://www.rawpixel.com/image/13993307/image-face-person-artFree Image from public domain licenseGuido Reni, l'Espérance (Eglise de San Pietro in Vincoli) d'après le dessin de Rocchi by James Anderson https://www.rawpixel.com/image/14261795/image-face-hands-frameFree Image from public domain licenseOtter floating on its back. Original public domain image from Flickr https://www.rawpixel.com/image/3393411/free-photo-image-animal-california-coastal-national-monumentFree Image from public domain licenseThe heads of five women with their hair combed back and dressed with ribbons, flowers, feathers and beads. Coloured… https://www.rawpixel.com/image/13970368/image-cartoon-face-flowersFree Image from public domain licenseJohann Jakob Harder. Line engraving by J. J. Thourneyser, 1687, after M. Merian the younger. https://www.rawpixel.com/image/13994046/image-face-person-artFree Image from public domain licenseCharles Aston Key. Stipple engraving by F. Holl, 1851, after G. Richmond. https://www.rawpixel.com/image/13998359/charles-aston-key-stipple-engraving-holl-1851-after-richmondFree Image from public domain licenseSun dog over the Grand Canyon of the Yellowstone. Original public domain image from Flickr https://www.rawpixel.com/image/4038801/photo-image-light-art-sunFree Image from public domain licenseH. Petrus (1581 - c. 1645) by Karel van Mallery, Karel van Mallery and Wierix https://www.rawpixel.com/image/13762032/petrus-1581-1645-karel-van-mallery-karel-van-mallery-and-wierixFree Image from public domain licenseA physician administers leeches to a patient. Colour process print after L. Boilly, 1827. https://www.rawpixel.com/image/13975001/image-cartoon-face-personFree Image from public domain licensePortret van Prins Willem I (1638 - 1643) by Pieter Claesz Soutman https://www.rawpixel.com/image/13786638/portret-van-prins-willem-1638-1643-pieter-claesz-soutmanFree Image from public domain licenseJas. Red Cloud, Sioux by Adolph F Muhr and Frank A Rinehart https://www.rawpixel.com/image/14246348/jas-red-cloud-sioux-adolph-muhr-and-frank-rinehartFree Image from public domain licenseJean-Baptiste-André Dumas. Stipple engraving by S. Freeman after E. Desmaisons. https://www.rawpixel.com/image/13996175/jean-baptiste-andre-dumas-stipple-engraving-freeman-after-desmaisonsFree Image from public domain licenseFoto van actrice Danielle Darrieux (c. 1950 - c. 1960) by anonymous https://www.rawpixel.com/image/13757802/foto-van-actrice-danielle-darrieux-c-1950-1960-anonymousFree Image from public domain licenseRobert Liston. Lithograph by M. Gauci, 1836, after E. U. Eddis. https://www.rawpixel.com/image/14000856/robert-liston-lithograph-gauci-1836-after-eddisFree Image from public domain licensePortrait of Hendrik van der Zande (1674-after 1741). Jurist and Dramatic Poet in Amsterdam (1732 - 1771) by Jan Maurits… https://www.rawpixel.com/image/13796026/image-face-frame-personFree Image from public domain licenseSir John Frederick William Herschel. Stipple engraving by G. Gabrielli, 1875, after himself. https://www.rawpixel.com/image/13993818/image-face-person-artFree Image from public domain licenseJohann Christian Friedrich Scherf. Stipple engraving by C. Felsing after J. C. Rincklake. https://www.rawpixel.com/image/14011255/image-face-person-artFree Image from public domain licenseFranz Karl Naegele. Lithograph by A. Maurin after C. L'Allemand. https://www.rawpixel.com/image/14008142/franz-karl-naegele-lithograph-maurin-after-lallemandFree Image from public domain licenseAlexandre Edmond Becquerel. Lithograph by C. Fuhr after P. Petit. https://www.rawpixel.com/image/14006462/alexandre-edmond-becquerel-lithograph-fuhr-after-petitFree Image from public domain licenseFig. 48 by Guillaume Benjamin Duchenne and Adrien Alban Tournachon https://www.rawpixel.com/image/14316923/fig-guillaume-benjamin-duchenne-and-adrien-alban-tournachonFree Image from public domain licensePlate 79, Surgical techniques for torticollis and club hand. https://www.rawpixel.com/image/13987989/plate-79-surgical-techniques-for-torticollis-and-club-handFree Image from public domain licenseA U.S. Army Paratrooper assigned to 1st Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade fires a .50 caliber… https://www.rawpixel.com/image/3317964/free-photo-image-wilderness-7th-army-training-command-agileFree Image from public domain licenseGloucester smallpox epidemic, 1896: Elsie Clutterbuck (right), a smallpox patient, with another patient (a boy) and a nurse.… https://www.rawpixel.com/image/13982766/photo-image-face-people-clothingFree Image from public domain licenseCharles A. Lockhart Robertson. Photograph by G. Jerrard, 1881. https://www.rawpixel.com/image/13988441/charles-lockhart-robertson-photograph-jerrard-1881Free Image from public domain license[Jean-Pons-Guillaume] Viennet by Nadar Gaspard Félix Tournachon https://www.rawpixel.com/image/14271860/jean-pons-guillaume-viennet-nadar-gaspard-felix-tournachonFree Image from public domain licenseGeorg Heinrich von Langsdorff. Stipple engraving by F.L. Lehmann, 1809, after L.H. Bojanus. https://www.rawpixel.com/image/13999646/image-face-person-artFree Image from public domain licenseEast Dallas Creek, 05/1972. Original public domain image from Flickr https://www.rawpixel.com/image/8799898/photo-image-public-domain-mountain-natureFree Image from public domain licenseHendrik van Deventer. Line engraving by P. Bouttats after T. van der Wilt. https://www.rawpixel.com/image/13990577/hendrik-van-deventer-line-engraving-bouttats-after-van-der-wiltFree Image from public domain licenseFlorence Perinne (Mrs Mansell). Photograph by A.N. Tomlinson. https://www.rawpixel.com/image/13969827/florence-perinne-mrs-mansell-photograph-an-tomlinsonFree Image from public domain licenseHugo de Groot op jonge leeftijd (1710 - 1719) by Arnoud van Halen https://www.rawpixel.com/image/13796429/hugo-groot-jonge-leeftijd-1710-1719-arnoud-van-halenFree Image from public domain licenseJohan Paul Graaf van Limburg Stirum (1873-1948). Gouverneur-generaal (1916-21) (1920) by M Loebell https://www.rawpixel.com/image/13791122/photo-image-face-frame-personFree Image from public domain licenseA prostitute with her name and charges. Etching by a follower of Wenceslaus Hollar, 180- . https://www.rawpixel.com/image/14012049/image-cartoon-face-personFree Image from public domain licenseFlorence Nightingale. Photogravure after G. Scharf, 1857. https://www.rawpixel.com/image/13977919/florence-nightingale-photogravure-after-scharf-1857Free Image from public domain licensePortrait of Henricus van Zijl (1545-1627) (1627) by Nicolaes van Borculo https://www.rawpixel.com/image/13791043/portrait-henricus-van-zijl-1545-1627-1627-nicolaes-van-borculoFree Image from public domain licenseLuigi Benfenati. Lithograph by Angiolini after A. Frulli, 1850. https://www.rawpixel.com/image/13989748/luigi-benfenati-lithograph-angiolini-after-frulli-1850Free Image from public domain license