"The Expressman and the Detective" from Allan Pinkerton. Scottish american detective and spy (1819-1894).

"The Somnambulist" from Allan Pinkerton. Scottish american detective and spy (1819-1894).

"The Spiritualists and the Detectives" from Allan Pinkerton. Scottish american detective and spy (1819-1894).

"The Spy of the Rebellion" from Allan Pinkerton. Scottish american detective and spy (1819-1894).