The following is an article from Uncle John's Slightly Irregular Bathroom Reader.Before there was an FBI, Secret Service, or any other national law-enforcement organization, there was the Pinkerton Detective Agency. Founded by Allan Pinkerton in 1850, it existed for 145 years, sleuthing for government and big business, and chasing bank robbers, mobsters, and spies. Here are a few of Pinkerton’s high-profile cases. SAVING PRESIDENT LINCOLNBackground: Weeks before Lincoln was to be sworn into office,...