The Citizen Kane Trailer is a four-minute, self-contained “making-of” featurette, released in 1940 to promote the feature film Citizen Kane. Unlike standard theatrical trailers of the era, it did not feature any footage of the actual film itself, but was instead a wholly original pseudo-documentary (considered by numerous film scholars such as Simon Callow, Joseph McBride and Jonathan Rosenbaum to be a standalone short film). In future works, Welles would build off this faux-documentary framework.