History: The first logo for the Pinkerton National Detective Agency. Founded by Allan Pinkerton in 1850, it was the first private detective agency in America. The term 'private eye' was inspired by the logo. 1850 [468 x 379]

http://i.imgur.com/PcUnZng.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/6litdy/the_first_logo_for_the_pinkerton_national/?utm_source=ifttt