1060. Prop "Silence Dogood" letter from National Treasure. (Buena Vista, 2004) Prop "Silence Dogood" letter from the film National Treasure. Measures 10 in. x 17 in. and mounted between Plexiglas sheets with wire mounts. This letter is seen hanging in the National Archives in the film. Includes a Disney certificate of authenticity. $1000 - $1500