KnowraPinkerton National Detective AgencyLinked fromLinked fromThe 9 pages that link to Pinkerton National Detective Agency, each with the reason it gives.All 9Broader topic 2Related 6Compared with 1Private investigatorBroader topic: Its growth helped establish the investigator as a prominent figure in American public life.Allan PinkertonBroader topic: It was the institution Pinkerton established and built into a national operation.