Balaena mysticetus, Bowhead whale, by Charles Dessalines D' Orbigny (1806-1876). Digitally enhanced from our own 1892 edition… Free Image from public domain license 
Bats under the full moon (1900-1936) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Long-eared owl on bare tree branch (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Tiger (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Long-eared owl in ginkgo (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Monkey, hanging from bamboo branch (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Frog by a Dandelion with Flies (1877–1938) by Jan van Oort. Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Roaring tiger (1900 - 1945) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
The Monster Balloon (Le Géant) from Nadar. Ascension 11 September 1865 by Morriën & Amand (1865). Original from… Free Image from public domain license 
Three children playing with a pig bladder by Jean Bernard (1775-1883). Original from the Rijks Museum. Digitally enhanced by… Free Image from public domain license 
The coffin of Ledenberg to the gallows (1619) by anonymous. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Singing men (1680–1684) by J. Waterloos. Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
View of the courtyard of Château de Botwel by Jean Bernard (1775-1883). Original from the Rijks Museum. Digitally… Free Image from public domain license 
View of la Roche-Guyon by Jean Bernard (1775-1883). Original from the Rijks Museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Two playing monkeys (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Fishing boats (1900 - 1936) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Farm on the water by Cornelis Borsteegh, (1809-1834). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Pagoda and rainbow (1900 - 1910) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Flock of birds and a torii gate in a pine tree forest (1877-1945) by Ohara Koson (1877-1945). Original from The Rijksmuseum.… Free Image from public domain license 
Fishing boats at dusk (1900-1920) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Monkey on a tree branch (1900-1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Four dancing women by Johan Teyler (1648-1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Galatea by Johan Teyler (1648-1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Laocoön and his sons by Johan Teyler (1648 -1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Amor presents a book to a muse by Johan Teyler (1648-1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Venus and Adonis by Johan Teyler (1648-1709). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Landscape with figures in the storm by Jean Bernard (1775-1883). Original from the Rijks Museum. Digitally enhanced by… Free Image from public domain license 
Landscape with a canal and two mills by Jean Bernard (1775-1883). Original from the Rijks Museum. Digitally enhanced by… Free Image from public domain license 
Praying mantis (1900 - 1936) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Two moorhens (1900 - 1930) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally enhanced by rawpixel. Free Image from public domain license 
Plants with pink flowers by the river (1877-1945) by Ohara Koson (1877-1945). Original from The Rijksmuseum. Digitally… Free Image from public domain license 
A mosaic illustration of hunter gatherers taken from William MacKenzie’s National Encyclopaedia (1891). Digitally… Free Image from public domain license 
Hopi Katcinas - Piokot Turkwinu Turkwinu Mana (1895) drawn by the native people from the book of Jesse Walter Fewkes… Free Image from public domain license 
Hopi Katcinas - Piokot Turkwinu Turkwinu Mana (1895) drawn by the native people from the book of Jesse Walter Fewkes… Free Image from public domain license 
Le Ballon by Imprimeur E. Pichot. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
The Plate Mansion by Katsushika Hokusai (1760-1849), a traditional Japanese Ukyio-e style illustration of traditional… Free Image from public domain license 
Approach of the simoom Desert of Gizeh illustration by David Roberts (1796–1864). Original from The New York Public… Free Image from public domain license 
The Tricolor balloon ascension in Paris, June 6th 1874. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
Vintage advertisement for a balet "Des Malers Traumbild" featuring Fanny Elssler (1810-1884). Original from New York public… Free Image from public domain license 
Pandora (1914) by Odilon Redon. Original from The MET museum. Digitally enhanced by rawpixel. Free Image from public domain license 
Leaving the River of May, the French discover two other rivers ; Six other rivers discovered by the French illustration from… Free Image from public domain license 
The Fallen Angel Spreads His Black Wings (1886) by Odilon Redon. Original from the Rijksmuseum. Digitally enhanced by… Free Image from public domain license 
Glory and Praise To You, Satan, In the Heights of Heaven, Where You Reigned, and in the Depths of Hell, Where, Vanquished… Free Image from public domain license 
Melancholy (1876) by Odilon Redon. Original from the Art Institute of Chicago. Digitally enhanced by rawpixel. Free Image from public domain license 
Guardian Spirit of the Waters (1878) by Odilon Redon. Original from the Art Institute of Chicago. Digitally enhanced by… Free Image from public domain license 
Christ by the Flower (1887) by Odilon Redon. Original from the National Gallery of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Strange Flower (Little Sister of the Poor) (1880) by Odilon Redon. Original from the Art Institute of Chicago. Digitally… Free Image from public domain license 
Wood Carving, hand–colored albumen silver print from Japan (1897) by Kazumasa Ogawa. Original from the J. Paul Getty… Free Image from public domain license 
The Latest Thing in Nightmares by John. S Pughe (1870-1909), a commentary cartoon with eyeglasses and teeth resembling… Free Image from public domain license 
Balloon with two passengers hovering over a French town square by Camille Gravis. Original from Library of Congress.… Free Image from public domain license 
Under the Horse Chestnut Tree Illustration by Mary Cassatt (1844-1926). Original from Library of Congress. Digitally enhanced… Free Image from public domain license 
Illustration of captive balloon with clock face and bell, hovering above Paris, France with Eiffel Tower in the background by… Free Image from public domain license 
Mouse (Mus-musculus) from the viviparous quadrupeds of North America (1845) illustrated by John Woodhouse Audubon (1812… Free Image from public domain license 
Madame Joseph-Michel Ginoux (1888–1889) by Vincent Van Gogh. Original from the MET Museum. Digitally enhanced by… Free Image from public domain license 
Yachts on a summer cruise published by Currier & Ives. Original from Library of Congress. Digitally enhanced by rawpixel. Free Image from public domain license 
The Blue Egyptian Water-Lily from The Temple of Flora (1807) by Robert John Thornton. Original from Biodiversity Heritage… Free Image from public domain license 
Enigma (L'Estampe Moderne) (1898) by Henri Jules Ferdinand Bellery–Desfontaines. Original from The MET Museum.… Free Image from public domain license 
Naked man posing sexually. Torso van een naakte man met gewaad over een arm (1688 - 1698) by anonymous. Original from The… Free Image from public domain license 
America, from Pictures of Extra Articles and Visitors to the Exhibitionca (1851) by Richard Doyle. Original from The MET… Free Image from public domain license 
Germany, from Pictures of Extra Articles and Visitors to the Exhibitionca (1851) by Richard Doyle. Original from The MET… Free Image from public domain license 
Spain, Scotland, and Switzerland, from Pictures of Extra Articles and Visitors to the Exhibition (1851) by Richard Doyle.… Free Image from public domain license 
All Nations, from Pictures of Extra Articles and Visitors to the Exhibitionca (1851) by Richard Doyle. Original from The MET… Free Image from public domain license 
France, from Pictures of Extra Articles and Visitors to the Exhibitionca (1851) by Richard Doyle. Original from The MET… Free Image from public domain license 
Italy, from Pictures of Extra Articles and Visitors to the Exhibitionca (1851) by Richard Doyle. Original from The MET Free Image from public domain license 
Pictures of Extra Articles and Visitors to the Exhibition (185) by Richard Doyle. Original from The MET Museum. Digitally… Free Image from public domain license 
Bavaria, from Pictures of Extra Articles and Visitors to the Exhibitionca (1851) by Richard Doyle. Original from The MET… Free Image from public domain license 
The Forest (ca. 1908–1909) by Edvard Munch. Original from The Art Institute of Chicago. Digitally enhanced by rawpixel. Free Image from public domain license 
Snow Storm in Vermont by Mary Altha Nims (1817–1907). Original from The Cleveland Museum of Art. Digitally enhanced by… Free Image from public domain license 
Harbor Scene by Mary Altha Nims (1817–1907). Original from The Cleveland Museum of Art. Digitally enhanced by rawpixel. Free Image from public domain license 
Ruins by Moonlight by Mary Altha Nims (1817–1907). Original from The Cleveland Museum of Art. Digitally enhanced by… Free Image from public domain license 
Lighthouse in Farne Islands from Second Series. Chiefly in the Counties of Durham and Northumberland (1842) published by… Free Image from public domain license 
Statues of Memnon Thebes illustration by David Roberts (1796–1864). Original from The New York Public Library.… Free Image from public domain license 
Interior of the Temple of Aboo Simbel Nubia illustration by David Roberts (1796–1864). Original from The New York… Free Image from public domain license 
Sanctuary of the Temple of Aboo Simbel Nubia illustration by David Roberts (1796–1864). Original from The New York… Free Image from public domain license 
Hand drawn black and white part of an aqueduct by Joseph August Knip (1777–1847). Original from The Rijksmuseum.… Free Image from public domain license 
A Part of an Aqueduct in Rome (ca. 1809–1812) by Joseph August Knip. Original from The Rijksmuseum. Digitally enhanced… Free Image from public domain license 
Poort met reiziger en muildier (ca. 1781–1782) by Cornelis Ploos van Amstel. Original from The Rijksmuseum. Digitally… Free Image from public domain license 
Hand drawn watercolor part of an aqueduct in Rome (ca. 1809–1812) by Joseph August Knip. Original from The Rijksmuseum.… Free Image from public domain license 
Stonehenge from the north from Our own country. Descriptive, Historical, Pictorial published by Cassell & Co. (1885).… Free Image from public domain license