Pes Hipocampi, Camillo Golgi
Science Source
Nerve Cells Santiago Ramon y Cajal
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Alexander Von Humboldts Chimborazo Map
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Pyramidal Cell In Cerebral Cortex, Cajal
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Pyramidal Cell In Cerebral Cortex, Cajal #4
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Pyramidal Cell In Cerebral Cortex, Cajal #1
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Pyramidal Cell In Cerebral Cortex, Cajal #3
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Polluted Water Spreading Disease #1
Science Source
Captured Confederate Soldiers, C.1860s
H. Armstrong Roberts/ClassicStock
Paleozoic Flora, Calamites, Illustration
British Library
Prehistoric Flora, Carboniferous
British Library
Slave Ship
Photo Researchers
Cajal Illustration Rat Nerve Endings
Science Source
Dugong, Sea-cow
British Library
Native American Man In Painted Robe
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Henry Morton Stanley, Journalistexplorer
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Political Cartoon Advocating Temperance #1
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Sioux Painted Buffalo Hide
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Robber Barons Crushing Workers
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Midwife Cutting Umbilical Cord, 1850
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Fraunhofer Lines #3
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Burr-hamilton Duel, 1804 #2
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David And Mabel Todd
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Elizabeth Blackwell, First Female #1
Science Source
Medicine Man Covered With Skin
Wellcome Images
Slave Ship Plan Showing Slaves In Hold
British Library
Piegan Indian Tipis, Medicine Tipi, C #1
Wellcome Images
Voltaire, French Author #3
Middle Temple Library
The Coronation Of Napoleon
Pierre Belzeaux/Rapho Agence
Vanderbilt And Fisk In Competition
Science Source
Faradays Iron Filings Experiment, 1850s
Wellcome Images
Mato-tope, Mandan Chief, 1830s
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President Abraham Lincoln With Son Tad
Getty Research Institute
East End Opium Den
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Nurses On Night Rounds 1899
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Slaves Waiting To Be Sold, Virginia
Wellcome Images
Yebichai Sweat, Navajo Medicine
Wellcome Images
Ayurvedic Medicine, India, 1825
Wellcome Images
Aquatic Life, Mesozoic Era, Illustration
British Library
Unscrupulous Hypnotist, 19th Century
Wellcome Images
Alien Invasion
Victor Habbick Visions and Photo Researchers
Scientific Expeditions
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Scientific Expeditions #2
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Charles Wheatstone, English Inventor
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Pan Amalgamation, Silver
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Mastodon Skeleton
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Mastodon Skeleton #2
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Rudolph Virchow, German Pathologist
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Temperance Movement Signing The Pledge
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A Voyage To The Moon #1
Omikron
Thomas Young, English Polymath
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The Progress Of Intemperance - The
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Lick Observatory, Mount Hamilton, Ca
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Lick Observatory, Mount Hamilton, Ca #1
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Prohibition-era Cartoon
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The Progress Of Intemperance - The #2
Photo Researchers
Liebigs Laboratory
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Lick Observatory, Mount Hamilton, Ca #2
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Lick Observatory, Mount Hamilton, Ca #3
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Chemists Laboratory #2
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Early Telephone Demonstration #1
Omikron
Rudolph Virchow, German Pathologist #2
Science Source
Marine Biology Research, Illustration
Library of Congress
Charles Wheatstone, English Inventor #1
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Charles Wheatstone, English Inventor #2
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Scientific Expeditions #1
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Aneurysm Of The Carotid Artery
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Mastodon Skeleton #3
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The Bible And Temperance
Photo Researchers
Rudolph Virchow, German Pathologist #1
Science Source
Liebigs Laboratory, Giessen
Science Source
Ocean Life, 1859
Metropolitan Museum of Art