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John Hopkins Operating Theater, 19031904
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Earliest Depiction Of Craniotomy
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British Library
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Montgolfier Hot Air Balloon
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Gemini Launching, 1964
NASA/Science Source
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Flock Of Sheep
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Nasa
Dakota Sioux Playing Ball Game
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Tomsich
Iron Tail Sioux Chief Early 1900s
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Earth With Celestial Circles Harmonia
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Moon With Epicycles Harmonia
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NASA Science Source