President Barack Obama, with First Lady Michelle Obama, delivers remarks during a reception for foreign heads of delegation… https://www.rawpixel.com/image/4049906/photo-image-face-person-microphoneFree Image from public domain licenseTwee figuren na restauratie (1972 - 1974) by Rijksmuseum Afdeling Beeld https://www.rawpixel.com/image/13753182/twee-figuren-restauratie-1972-1974-rijksmuseum-afdeling-beeldFree Image from public domain licenseJames Hamilton. Stipple engraving by N. C. Branwhite, 1803, after himself. https://www.rawpixel.com/image/14003982/james-hamilton-stipple-engraving-branwhite-1803-after-himselfFree Image from public domain licenseSir David Brewster. Engraving by D. J. Pound, 1861, after J. Watkins. https://www.rawpixel.com/image/14003795/sir-david-brewster-engraving-pound-1861-after-watkinsFree Image from public domain licenseHenry L. Dawes by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318122/henry-dawes-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseWilliamson R. W. Cobb by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318348/williamson-cobb-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseGroup portrait of Lord Clyde, Sir Hope Grant and General Mansfield by Felice Beato https://www.rawpixel.com/image/14325764/photo-image-face-person-artFree Image from public domain licenseSaint John Nepomucen. Engraving by A. Rossi after P. Novelli. https://www.rawpixel.com/image/14002550/saint-john-nepomucen-engraving-rossi-after-novelliFree Image from public domain licenseSaint Mary (the Blessed Virgin) with the Christ Child and Saint John the Baptist. Lithograph by F.S. Hanfstaengl, 1836… https://www.rawpixel.com/image/13978091/image-face-christ-personFree Image from public domain licenseHermann Ludwig Ferdinand von Helmholtz. Photograph by W.J. Stacey . https://www.rawpixel.com/image/13977078/hermann-ludwig-ferdinand-von-helmholtz-photograph-wj-staceyFree Image from public domain licenseUrban Hjaerne. Line engraving by J.B. Brühl after E. Brenner. https://www.rawpixel.com/image/13998551/urban-hjaerne-line-engraving-jb-bruhl-after-brennerFree Image from public domain licenseSir Richard Douglas Powell. Photogravure after Hallett Hyatts, 1906. https://www.rawpixel.com/image/13992456/sir-richard-douglas-powell-photogravure-after-hallett-hyatts-1906Free Image from public domain licensePortret van keizer Leopold I (1680 - 1691) by Justus van den Nijpoort https://www.rawpixel.com/image/13761587/portret-van-keizer-leopold-1680-1691-justus-van-den-nijpoortFree Image from public domain licenseSir Isaac Lyon Goldsmid. Coloured etching by Richard Dighton, 1824. https://www.rawpixel.com/image/13968203/sir-isaac-lyon-goldsmid-coloured-etching-richard-dighton-1824Free Image from public domain licenseA woman, previously designated as Elizabeth Garrett Anderson or Isabel Thorne. Oil painting. https://www.rawpixel.com/image/14010371/image-face-person-artFree Image from public domain licenseLion lying down on stone in sunlight with brick wall behind. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3297194/free-photo-image-animal-zoo-animals-images-picturesFree Image from public domain licenseSt Mary's Hospital, Plaistow: children from Plaistow. Photograph, 1904. https://www.rawpixel.com/image/13973286/marys-hospital-plaistow-children-from-plaistow-photograph-1904Free Image from public domain licenseDavid Kilgore by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318351/david-kilgore-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseClaude Deshayes Gendron. Line engraving by J. Daullé, 1787, after H. Rigaud. https://www.rawpixel.com/image/13995432/claude-deshayes-gendron-line-engraving-daulle-1787-after-rigaudFree Image from public domain licenseGalileo Galilei. Lithograph by N. Fontani after J. Sustermans. https://www.rawpixel.com/image/13994326/galileo-galilei-lithograph-fontani-after-sustermansFree Image from public domain licenseJoseph R. Cockerill by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316628/joseph-cockerill-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseKarl Asmund Rudolphi. Lithograph by A. Kunike after A. Temmel. https://www.rawpixel.com/image/14005913/karl-asmund-rudolphi-lithograph-kunike-after-temmelFree Image from public domain licensePhilibert Orry. Engraving by B. Lepicié after H. Rigaud, 1737. https://www.rawpixel.com/image/13995264/philibert-orry-engraving-lepicie-after-rigaud-1737Free Image from public domain licensePortrait of Dominique Jacques de Eerens, Governor-General of the Dutch East Indies (1855 - 1858) by Cornelis Kruseman https://www.rawpixel.com/image/13792822/image-face-person-artFree Image from public domain licenseA girl giving a piggy-back to a younger girl. Photogravure after Arthur J. Elsley, 1907. https://www.rawpixel.com/image/13951794/image-dog-face-personFree Image from public domain license's Lands schip van oorlog Utrecht onder commando van den Capitein J. P. van Braam (in or after 1783 - 1800) by anonymous and… https://www.rawpixel.com/image/13753256/image-paper-frame-artFree Image from public domain licenseSoldaat der Kompagnie Werklieden (1835 - 1850) by Albertus Verhoesen and Johannes Paulus Houtman https://www.rawpixel.com/image/13748535/image-paper-face-personFree Image from public domain licenseErasmus Darwin. Stipple engraving by R. Cooper, 1823, after J. Rawlinson. https://www.rawpixel.com/image/14009882/erasmus-darwin-stipple-engraving-cooper-1823-after-rawlinsonFree Image from public domain licenseBenjamin Hoadly and his wife. Oil painting by Francis Hayman. https://www.rawpixel.com/image/14017357/benjamin-hoadly-and-his-wife-oil-painting-francis-haymanFree Image from public domain licensePortrait of a Lady by Achille Devéria and Théodule Devéria https://www.rawpixel.com/image/14272119/portrait-lady-achille-deveria-and-theodule-deveriaFree Image from public domain licenseGermain Pichault de Lamartinière. Line engraving by Duchenne after F. A. de Latinville. https://www.rawpixel.com/image/14008103/image-face-person-artFree Image from public domain licenseAfrica: a medicine man in ceremonial dress holding a staff and a whisk. Reproduction of a photograph, 1880/1900 . https://www.rawpixel.com/image/13958966/photo-image-face-person-medicineFree Image from public domain licenseÉlectro-Physiologie Photographique, Figure 54 by Guillaume Benjamin Duchenne and Adrien Alban Tournachon https://www.rawpixel.com/image/14311713/image-face-person-artFree Image from public domain licenseJohn R. Thomson by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14316849/john-thomson-james-earle-mcclees-and-julian-vannersonFree Image from public domain licenseJournal of a residence in Circassia, during the years 1837, 1838, and 1839 / By James Stanislaus Bell. https://www.rawpixel.com/image/13957804/image-horse-cartoon-faceFree Image from public domain licenseThe people of China weighed down by the hierarchy of emperor, mandarins and priests. Coloured lithograph by Smith, 1858. https://www.rawpixel.com/image/13962103/image-cartoon-face-personFree Image from public domain licenseA man in a boat house (C.S. Parnell) is damaging a boat representing the Liberal Party with a hammer inscribed "Manifesto".… https://www.rawpixel.com/image/13962799/image-cartoon-face-personFree Image from public domain licenseCopy of a Bust of her Majesty Queen Victoria, by Joseph Durham, Esq. F.S.A. by Hugh Welch Diamond https://www.rawpixel.com/image/14277662/image-face-person-artFree Image from public domain licenseCute Rudolf reindeer doll on armchair. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3301358/free-photo-image-background-winter-armchair-bath-towelFree Image from public domain licenseJ. D. B. Wilkens, Lieutenant Colonel in the Infantry (1837) by Jurjen de Jong https://www.rawpixel.com/image/13792836/wilkens-lieutenant-colonel-the-infantry-1837-jurjen-jongFree Image from public domain licenseDe recondita abscessuum natura libri VII / [Marco Aurelio Severino]. https://www.rawpixel.com/image/13982670/recondita-abscessuum-natura-libri-vii-marco-aurelio-severinoFree Image from public domain licenseHystéro-Épilepsie Contracture by Paul Marie Léon Regnard https://www.rawpixel.com/image/14314336/hystero-epilepsie-contracture-paul-marie-leon-regnardFree Image from public domain licenseA woman with her head tilted to the right, viewed from the front. Drawing attributed to H.W. Berend, c. 1856. https://www.rawpixel.com/image/13995038/image-cartoon-face-personFree Image from public domain licenseA Mughal courtier wearing a pink turban and holding an ornament . Watercolour drawing by an Indian artist. https://www.rawpixel.com/image/13953382/image-cartoon-face-personFree Image from public domain licenseBrock Linker and Anna Peterson in seeding mix including mustard acting as a flea beetle trap crop around a canola field at… https://www.rawpixel.com/image/3336132/free-photo-image-farm-women-summer-farmer-field-flowersFree Image from public domain licenseMan met wandelstok, op de rug gezien, op de weg van Chozenji bij Nikko, Japan (c. 1890 - in or before 1903) by anonymous https://www.rawpixel.com/image/13758078/photo-image-paper-frame-plantFree Image from public domain licenseA barber-surgeon attending to a man's forehead. Oil painting. https://www.rawpixel.com/image/13959599/barber-surgeon-attending-mans-forehead-oil-paintingFree Image from public domain licenseJohn M. Sandidge by James Earle McClees and Julian Vannerson https://www.rawpixel.com/image/14318674/john-sandidge-james-earle-mcclees-and-julian-vannersonFree Image from public domain license