Cover ornamented with artist stamp in red and tan ink depicting a figure in traditional Japanese dress. Rubber stamp in black ink: sender's return address. Paper clipping with rubber stamp in blue and red ink glued to cover: circular design with mushroom cloud silhouette, "NO MORE HIROSHIMA", and "RYOSUKE COHEN". Paper clipping with rubber stamp in blue ink glued to cover: "PRINTED MATTER ONLY". US letter sheet enclosed. Sheet covered in various rubber stamps in various colors. Possible prototype for Brain Cell project (No. 1 is dated August 1985, see Folder: 613-24).