Cajal Drawing of Microscopic Structure of the Brain 1904
Science Source
World Map 1636
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The Eagles Nest, 1861
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John Daniels
Paul Newman and Joanne Woodward
Louis Goldman
Hyacinth Root Tip Cells
Omikron
Boston Tea Party, 1773 #4
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Mars Rover Curiosity, Artists Rendering
NASA Science Source
Apollo 11 Footprint on the Moon
NASA Science Source
Ida B. Wells, A Red Record, 1894
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Halleys Comet, Bayeux Tapestry
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Al Idrisi World Map 1154
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Woolly Mammoth Found In Siberia, 1903
Science Source
Hugo Pictor #2
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Dioscoridess De Materia Medica
Science Source
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Rachel Carson, American Marine Biologist
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Pottery Wheel, Sequence #4
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Archaeopteryx #1
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Inverted Jenny, U.s. Postage Stamp, 1918
Science Source
Confederate Memorial
Frederica Georgia
Great Crested Grebes
Des Ong FLPA
Saturn And Its Moon Dione
NASA/Science Source
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NASA and Science Source
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Akbar Receiving Captured Drums
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The Planisphere Of Ptolemy, Harmonia
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Retreat Of British From Concord
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Marie And Pierre Curie In Laboratory
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Wild Carrot Root Section
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Canada Lynx #4
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Statue Of Imhotep
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Ikon Ikon Images
Chinese Acupuncture Chart
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Margaret Hamilton, American Computer #2
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Hms Beagle Watercolor
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Wall Hanging Of Norse Gods #2
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Ayurvedic Man, 18th Century
Wellcome Images
Leon Trotzky
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Forest Fire #1
Richard Hansen
Boundary City
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Hippocratic Oath
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Medicare Golden Age Passport
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Native American With Scalps Mid-18th C
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Royal Reception Relief, Persepolis, Iran #2
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Muybridge Locomotion Racehorse
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Perfume 10 AD
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Assyrian Cuneiform Characters
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M Watson
Greta Garbo #2
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Man With Brain Ventricles, Albertus #1
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Theodore Clutter
Tailless Whip Scorpion
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Kit Carson American Frontiersman
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18th Century Anatomical Engraving #7
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Medieval Medicine
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Copernican World System, 17th Century
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Seige of Tower Of Saint Nicolas
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Aztec Human Sacrifice Codex #2
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