Left: August Klett, Portrait of Hans Prinzhorn, 1919. Drawn on a sheet of notes left behind by Prinzhorn on a visit, 8 1/4 x 6 1/2 inches. Right: August Klett, Untitled, 1915. Pencil, watercolor, and colored pencil on writing paper, 8 3/16 x 6 1/2 inches/