This is an official FBI "WANTED" poster from 1942. The potential criminal being sought is Rheinhold Rudolf Barth, who is described as a "trained Nazi saboteur". The poster includes a photo of Barth, a rather unassuming, slender, bookish-looking fellow with dark hair and rimless spectacles. Also provided is a detailed physical description of Barth, his marital status, occupation, former addresses and the names of his wife and children. The reader is instructed "If you are in possession of any information concerning the whereabouts of Rheinhold Rudolf Barth, communicate immediately in person or by telephone or telegraph 'collect' to the undersigned or to the nearest office of the Federal Bureau of Investigation, United States Department of Justice..." Contact information for FBI Director J. Edgar Hoover is provided at the bottom of the poster. 16 x 10.5 in.