9.25x12.25x2" deep box contains complete and unused kit by Stroward Inc. ©1952 The Chicago Tribune. Comes w/original instruction pamphlet. Exc. Box lid has illustration of Dick Tracy and simulated page from "Crimestoppers Textbook" that reads "A Chemical Placed In The Ink Supply Of A Suspect Leads To The Arrest Of The Extortionist. The Ink Fluoresced The Same On Both The Letters And The 'Planted' Ink." Wax pencil price on one side. Box has some color rubs/dust soiling but tight and Fine. Kit consists of GE ultraviolet bulb/extension cord, invisible ink and pen, magic cloth, four fluorescent dyes and mixing bowls, three paint brushes and piece of wood. Dyes have the following names - Green Neptune, Yellow X, Mars Red, Outer Blue. All contents have dried. Kit was for "Amateur Detective" to write secret letters, perform card tricks and other party games, mark clothing, money and other valuables w/invisible ink for identification. Contents complete and unused. NM. Rare and well-deigned set.