Popular Lectures on Human Nature, a book cover illustration by an unknown artist referencing Prof. W.G Alexander. Original… https://www.rawpixel.com/image/429751/free-illustration-image-brain-book-vintageFree Image from public domain licenseRisograph PSD effect photoshop add-on remixed media https://www.rawpixel.com/image/3870756/illustration-psd-background-face-textureView licenseA man standing on jagged rocks in a fast-flowing river in the wilderness. Original public domain image from Wikimedia Commons https://www.rawpixel.com/image/3282300/free-photo-image-nature-california-riverFree Image from public domain licenseStudents psd holding megaphone speaking at human rights demonstration with colorful floral media collage https://www.rawpixel.com/image/2802538/premium-psd-collage-feminism-womens-dayView licenseGirls Picking Apples (1915) by Edvard Munch. Original from The MET Museum. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/2043770/girls-picking-applesFree Image from public domain licenseThe Clouded Tiger from Zoological sketches (1861-1867) by Joseph Wolf and Philip Lutley Sclater. Digitally enhanced by… https://www.rawpixel.com/image/16594833/image-cat-jungle-tigersFree Image from public domain licenseAn Encampment in the Atlas Mountains (ca. 1865) by Eugène Fromentin https://www.rawpixel.com/image/10126940/encampment-the-atlas-mountains-ca-1865-eugene-fromentinFree Image from public domain licenseThe Hippopotamus from Zoological sketches (1861-1867) by Joseph Wolf and Philip Lutley Sclater. Digitally enhanced by… https://www.rawpixel.com/image/16594795/image-lion-animal-birdFree Image from public domain licenseThe Myth of Io (ca. 1490 (Renaissance)) by Bartolomeo di Giovanni https://www.rawpixel.com/image/10148531/the-myth-ca-1490-renaissance-bartolomeo-giovanniFree Image from public domain licenseCaptive chimpanzee . https://www.rawpixel.com/image/11955989/captive-chimpanzee-generated-image-rawpixelView licensePicumus cirrahatus, Picus melanochloris, Picus chrysochloris and Picus robustus from History of the birds of Brazil (1854… https://www.rawpixel.com/image/16577545/image-animal-birds-personFree Image from public domain licenseThe Rocky Beach and Cliffs at Fécamp (mid-1830s) by Edward William Cooke https://www.rawpixel.com/image/10038234/the-rocky-beach-and-cliffs-fecamp-mid-1830s-edward-william-cookeFree Image from public domain licenseBarnyard Scene (19th century) by Imitator of Jean Baptiste Camille Corot https://www.rawpixel.com/image/9775731/barnyard-scene-19th-century-imitator-jean-baptiste-camille-corotFree Image from public domain licenseBeggar Boy and His Dog (mid 19th century) by Alfred Jacob Miller https://www.rawpixel.com/image/10126276/beggar-boy-and-his-dog-mid-19th-century-alfred-jacob-millerFree Image from public domain licenseA Temple Ruin in Agrigento (c. 1825) by Carl Wilhelm Götzloff https://www.rawpixel.com/image/10034022/temple-ruin-agrigento-c-1825-carl-wilhelm-gotzloffFree Image from public domain licenseA River Landscape with Two Cows and a Figure on a Bridge (18th century) by Style of Thomas Gainsborough https://www.rawpixel.com/image/9793349/image-clouds-cows-animalFree Image from public domain licenseSioux Indians in the Mountains (ca. 1850) by Alfred Jacob Miller https://www.rawpixel.com/image/10125710/sioux-indians-the-mountains-ca-1850-alfred-jacob-millerFree Image from public domain licenseThe Glärnisch Massif in Switzerland (c. 1790) by Swiss 18th Century https://www.rawpixel.com/image/10025606/the-glarnisch-massif-switzerland-c-1790-swiss-18th-centuryFree Image from public domain licenseWilly Lott's House (recto); Landscape Sketches with Trees and Church Tower (verso) (c. 1812–13 (recto); c. 1811–13) by John… https://www.rawpixel.com/image/9790860/image-scenery-sky-personFree Image from public domain licenseLane to the Village (19th century) by Artist Unknown, British and 19th Century https://www.rawpixel.com/image/9775801/lane-the-village-19th-century-artist-unknown-british-and-19th-centuryFree Image from public domain licenseBather Arranging Her Hair (1885) by Pierre Auguste Renoir https://www.rawpixel.com/image/9783022/bather-arranging-her-hair-1885-pierre-auguste-renoirFree Image from public domain licenseApple Trees in a Field (c. 1865–70) by Jean Baptiste Camille Corot https://www.rawpixel.com/image/9786014/apple-trees-field-c-1865-70-jean-baptiste-camille-corotFree Image from public domain licenseThese are Easy and Chaste Attitudes (1898) by Maurice Denis https://www.rawpixel.com/image/9777906/these-are-easy-and-chaste-attitudes-1898-maurice-denisFree Image from public domain licenseInuit Mother and Children (1906) by Beverly Bennett Dobbs https://www.rawpixel.com/image/9775006/inuit-mother-and-children-1906-beverly-bennett-dobbsFree Image from public domain licenseRockets and Blue Lights (Close at Hand) to Warn Steamboats of Shoal Water (1840) by Joseph Mallord William Turner https://www.rawpixel.com/image/9788442/image-clouds-hand-lightsFree Image from public domain licenseFemme Malgache et Ses Enfants (Madagascan Woman and Her Children) (Plate 3) (1863) by Désiré Charnay https://www.rawpixel.com/image/10046245/photo-image-face-people-manFree Image from public domain licenseYoung Girl Guarding her Sheep (c. 1860–62) by Jean François Millet https://www.rawpixel.com/image/9786922/young-girl-guarding-her-sheep-c-1860-62-jean-francois-milletFree Image from public domain licenseItalian Coast Scene with Ruined Tower (1838) by Thomas Cole https://www.rawpixel.com/image/10041090/italian-coast-scene-with-ruined-tower-1838-thomas-coleFree Image from public domain licenseA Summer Evening at the Lago Maggiore (1845) by Salomon Corrodi https://www.rawpixel.com/image/10042290/summer-evening-the-lago-maggiore-1845-salomon-corrodiFree Image from public domain licenseThe Farm (Cottage at the Edge of a Marsh) (c. 1860) by Théodore Rousseau https://www.rawpixel.com/image/9789881/the-farm-cottage-the-edge-marsh-c-1860-theodore-rousseauFree Image from public domain licenseA Wooded Lakeside with an Italianate Villa (1796) by Ludwig Hess https://www.rawpixel.com/image/10027084/wooded-lakeside-with-italianate-villa-1796-ludwig-hessFree Image from public domain licenseWood Gatherers: An Autumn Afternoon (1891) by George Inness https://www.rawpixel.com/image/9776865/wood-gatherers-autumn-afternoon-1891-george-innessFree Image from public domain licenseKagurazaka Street after Night Rain (1929) by Yoshida Hiroshi https://www.rawpixel.com/image/9774459/kagurazaka-street-after-night-rain-1929-yoshida-hiroshiFree Image from public domain licenseLandscapes and Interiors: Through the Fields (1899) by Édouard Vuillard https://www.rawpixel.com/image/9775981/landscapes-and-interiors-through-the-fields-1899-edouard-vuillardFree Image from public domain licenseRoad by the Water (c. 1865–70) by Jean Baptiste Camille Corot https://www.rawpixel.com/image/9785974/road-the-water-c-1865-70-jean-baptiste-camille-corotFree Image from public domain licenseThe Farm-Yard in Winter (1861) by George Henry Durrie, Currier and Ives and Currier and Ives https://www.rawpixel.com/image/10045897/image-cow-animals-birdFree Image from public domain licenseConcert of Birds (1660/1670) by Anonymous Artist and Jan van Kessel the Elder https://www.rawpixel.com/image/10013593/concert-birds-16601670-anonymous-artist-and-jan-van-kessel-the-elderFree Image from public domain licenseA Village Street in Northern Italy (1874) by Eugenio Gignous https://www.rawpixel.com/image/10047667/village-street-northern-italy-1874-eugenio-gignousFree Image from public domain licenseNeapolitan Children Bathing (1879) by John Singer Sargent https://www.rawpixel.com/image/9783878/neapolitan-children-bathing-1879-john-singer-sargentFree Image from public domain licenseLes trois graces by Jean François Janinet and Giovanni Antonio Pellegrini https://www.rawpixel.com/image/10020180/les-trois-graces-jean-francois-janinet-and-giovanni-antonio-pellegriniFree Image from public domain licenseThe Loing and the Mills of Moret, Snow Effect (1891) by Alfred Sisley https://www.rawpixel.com/image/9777067/the-loing-and-the-mills-moret-snow-effect-1891-alfred-sisleyFree Image from public domain licenseTony Casale, "Bologna," 11 years old been selling newspapers for 4 years, Hartford, Connecticut, March 1909 (March 1909) by… https://www.rawpixel.com/image/10056522/photo-image-face-person-newspaperFree Image from public domain licenseWooded Landscape with a Boy Leading a Donkey and Dog, and an Extensive Panorama with Buildings and Distant Hills (early… https://www.rawpixel.com/image/9795012/image-background-dog-cowFree Image from public domain licenseLandscape with Cows and Oaks (c. 1860) by Théodore Rousseau https://www.rawpixel.com/image/9786780/landscape-with-cows-and-oaks-c-1860-theodore-rousseauFree Image from public domain licenseStudies of Greenland Eskimos: Tent with Two Children (c. 1900) by Robert Edwin Peary https://www.rawpixel.com/image/9774270/photo-image-face-person-manFree Image from public domain licenseThe Apse of Notre Dame de Paris Seen from the Seine (1900) by Paul Berthon https://www.rawpixel.com/image/9775491/the-apse-notre-dame-paris-seen-from-the-seine-1900-paul-berthonFree Image from public domain licenseIn the Time of Harmony (Au temps d'harmonie) (c. 1896) by Paul Signac https://www.rawpixel.com/image/9775198/the-time-harmony-au-temps-dharmonie-c-1896-paul-signacFree Image from public domain licenseLandscape (probably c. 1780) by Louis Gabriel Moreau the Elder https://www.rawpixel.com/image/10024699/landscape-probably-1780-louis-gabriel-moreau-the-elderFree Image from public domain licenseWoman and Dog at the Gate (c. 1875–80) by Roger Joseph Jourdain https://www.rawpixel.com/image/9783717/woman-and-dog-the-gate-c-1875-80-roger-joseph-jourdainFree Image from public domain licenseMary Magdalene Comforted by an Angel (1626) by Claude Vignon https://www.rawpixel.com/image/10007854/mary-magdalene-comforted-angel-1626-claude-vignonFree Image from public domain licenseLandscape with the Voyage of Jacob (1677) by Claude Lorrain https://www.rawpixel.com/image/9798774/landscape-with-the-voyage-jacob-1677-claude-lorrainFree Image from public domain licenseThe Gleaners (19th century) by Artist Unknown, French and 19th century https://www.rawpixel.com/image/9776067/the-gleaners-19th-century-artist-unknown-french-and-19th-centuryFree Image from public domain licenseBrutus Condemning His Sons to Death (1788) by Guillaume Lethière https://www.rawpixel.com/image/9795104/brutus-condemning-his-sons-death-1788-guillaume-lethiereFree Image from public domain license