
Rochester and Pittsburg Railroad and Coal and Iron Company of Pennsylvania Burden Iron Company of Troy, N. Muskegon lumber merchants of Muskegon, Mich., lumber merchants of Saginaw City, Mich. The Pinkerton Preventive Patrol has furnished the police for the Hocking Valley Coal and Iron Company of Ohio during their recent protracted strike Chicago, Wilmington and Vermillion Coal Company of Illinois Menominee Mining Company of Menominee, Mich. We are therefore prepared to furnish uniformed men whenever required, by the day, week, or month, for day or night duty, and we respectfully call the attention of those in charge of excursions, proprietors of public resorts, railroad and all other corporations who have to deal with large numbers of patrons or disaffected or striking employees, to the advantage of our patrol system.Ī daily written report is furnished to our patrols, when required, of any irregularities or occurrences transpiring during the time our officers are on duty.

The members of this force are selected for their general aptitude for police duty, and are under strict discipline and in charge of experienced officers who have been trained to the business.

The Pinkerton Preventive Patrol was organized by the late Allan Pinkerton in 1850, it being the first uniformed police patrol in the city of Chicago, and from that time to date has had under its charge as watchmen all the banks and nearly all the wholesale and large retail business houses in Chicago. Sirs: We take this method of calling your attention to the advantages of private police patrol in case you are at any time in need of such services. This advertisement from the 1890s touted the prowess of the Pinkerton detective agency in maintaining law and order and played on corporate fears of “dissatisfaction among the laboring classes” to build business.

#Pinkerton detective agency trial
McParlan’s testimony (which historians have largely dismissed as fabricated) at the sensational “Molly Maguire” trial of 1876 helped send ten men to the gallows and broke the miners’ union for a generation. The agency’s success depended on both armed guards and the clandestine efforts of secret operatives like James McParlan, who had infiltrated Irish anthracite miners’ organizations in the mid 1870s. In the 1880s, the Pinkertons provided services for management in 70 different labor disputes. Spies for Hire: Advertising by the Pinkerton Agencyīy the early 1890s, the 2,000 active agents and 30,000 reserves of the Pinkerton National Detective Agency were larger than the standing army of the United States.
