Source : Webster's Revised Unabridged Dictionary (1913)

Autographic \Au`to*graph"ic\, Autographical \Au`to*graph"ic*al\,
   a.
   1. Pertaining to an autograph, or one's own handwriting; of
      the nature of an autograph.

   2. Pertaining to, or used in, the process of autography; as,
      autographic ink, paper, or press.

Source : WordNet®

autographic
     adj : written in the author's own handwriting