On 15 February 1908, Porter released the trick film "A Sculptor's Welsh Rabbit Dream" that featured clay molding itself into three complete busts. No copy of the film has yet been located. It was soon followed by the similar extant film "The Sculptor's Nightmare" (6 May 1908), directed by Wallace McCutcheon Sr. and photographed by Billy Bitzer with cameo appearances of D.W. Griffith and Mack Sennett. The busts are also animated to blink, speak, drink and turn left and right for a short sequence.