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19th century illustration of a scientist with microscopes, books, vials and bottles delving into the mysteries of the natural world.   From a 1876 copy of Harper's New Monthly Magazine.
Bernardo O'Higgins Riquelme portrait from Chilean money
Shoqan Walikhanov (1835-1865) portrait from old Kazakhstan banknote
Facial Features Pattern Design on Banknote
Fossil of the prehistoric bird Archeopteryx. The historical significance of this theropod lies mainly in its role as the missing evolutionary link between reptiles and birds.
Portrait of Commandant General Petrus Jacobus Joubert (1831 - 1900). Vintage photo etching circa late 19th century.
A drawing of Jovan Jovanovic Zmaj as depicted on Dinar banknote on a white background
Vintage photograph of Camille Flammarion, French astronomer, age 25
Sacramento, California, USA - March 28, 2011: A 1998 USA postage stamp with a portrait of George Washington Carver (1864-1943). Carver was a botanist, inventor, educator, and agricultural researcher. He is perhaps best known for his work in finding hundreds of uses for peanuts.
Louis Pasteur a closeup portrait from money
Jose Felix Ribas (1775 - 1815). Portrait from Venezuela Banknotes
Antique portrait of famous men: Mark Twain
Vintage photo of an older man at work. Photo from 1972. USSR, Chasov Yar.
Cliche of an old scientist. Ironically nostalgic image of the scientist who sits with his microscope in smoke and fumes from his experiments
Mihai Eminescu cit from 1000 Romanian lei banknote, 1996 Series - paper, for design purpose
Vintage photograph of Camille Flammarion, French astronomer, age 40
An engraving of Little Crow published in 1863 by Harper & Brothers Publishers in New York.
Ninomiya Sontoku a closeup portrait from old Japanese yen
Simon Bolivar (1783 - 1830) Portrait from Venezuelan Banknotes. Venezuelan military and political leader
Vintage Photo of a Man - Scanned 1890 photo
Portrait of Louis Pasteur, French chemist and microbiologist, on a vintage, canceled post stamp from Poland held by tweezer above a page of stamp album
Portrait of Reverend William George Lane of the Royal Canadian Regiment of Infantry. Vintage photo etching circa late 19th century.
Mihai Eminescu cit from 1000 Romanian lei banknote, 1996 Series - paper, for design purpose
Businessman in 1919.
Vintage photograph of King of Lifou, New Caledonia, Victorian 19th Century
Frederic Chopin Monument in Warsaw from Polish money
Old Portrait of a man. Made ​​in a studio. Vintage. Year 1890
Richard Cobden (1804 - 1865), British manufacturer and leading figure of Manchester liberalism and the free trade movement. Wood engraving, published in 1865.
Close up portrait of George Washington from dollar bill against black background.
Portrait of Donald Alexander Smith, 1st Baron Strathcona and Mount Royal “Lord Strathcona” (1820 - 1914). Vintage photo etching circa late 19th century.
Free Images: "bestof:Paul Gervais.jpg French zoologist and paleontologist Paul Gervais 1816-1879 http //archive org/stream/popularsciencemo31newy page/n447/mode/1up Popular Science"
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