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Due to writing the first book about toxicology he was nicknamed "the father of toxicology"
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Was the first to discover how fingerprints could be used to track criminals
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Came up with the first system of physical measurements, photography, and record keeping for police
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British writer who created Sherlock Holmes. Then he published A Study in Scarlet (First Sherlock Holmes book)
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He came up with documented evidence and wrote a book called Questioned Documents
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Used the first forensic science laboratory
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Italian scientist who came up with the blood types A, B, AB, and O from dried blood stains