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Was repealed 3 years later.
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Pinkerton's Trademark was an open eye above the slogan 'We never sleep'. The trademark gave rise to the use of the term "private eye" in reference to any private investigator.
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By June of 1858, it had over 700 photographs for detectives to study so that they might recognize the criminals in the streets.
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(this is not to be confused with the Secret Service)
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This was originally done to combat counterfeiting.
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At 9 o'clock every morning, all criminals arrested in the past 24 hours were marched before his detectives, who were expected to make notes and to recognize the criminals later on.
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