Following cases where forensic evidence pinpointed particular typewriters to typed ransom notes, kidnappers started to use pre-printed words assembled from different newspapers. In popular culture, ransom notes are often depicted as being made from words in different typefaces clipped from different sources (typically newspapers), in order to disguise the handwriting of the kidnapper, leading to the phrase ransom note effect being used to describe documents containing jarringly mixed fonts. An early use of this technique in film is in the 1952 film "The Atomic City".