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  2. The Expressman and the Detective by Allan Pinkerton - Audiobook

    The Expressman and the Detective by Allan Pinkerton - Audiobook

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  3. #Security #Pinkerton #privateinvestigator Founder of the modern Security Industry? Allan Pinkerton

    #Security #Pinkerton #privateinvestigator Founder of the modern Security Industry? Allan Pinkerton

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  4. Kate Warne: The First Female Detective Who Saved Abraham Lincoln

    Kate Warne: The First Female Detective Who Saved Abraham Lincoln

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  5. #securityofficer #police #securitypersonnel #pinkerton #investigation Allan Pinkerton

    #securityofficer #police #securitypersonnel #pinkerton #investigation Allan Pinkerton

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  6. CIA Archives: United States Army Counterintelligence (1953)

    CIA Archives: United States Army Counterintelligence (1953)

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  8. Graceland Cemetery: Where All the Famous Chicagoans are Pushing Up Daisies

    Graceland Cemetery: Where All the Famous Chicagoans are Pushing Up Daisies

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