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Founded forensic Toxicology
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Came up with the first system of measurement, photography, and record keeping for police
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Created Sherlock Holmes and Published (A Study in Scarlet).
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Was the first to show how fingerprints could be used to identify individuals.
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Was the first to use forensic science laboratory
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Came up with blood types
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Wrote the first Questioned Documents book
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Founded Firearms Identification
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