The Collaborative International Dictionary
Autographical
Autographic \Au`to*graph"ic\, Autographical \Au`to*graph"ic*al\, a.
Pertaining to an autograph, or one's own handwriting; of the nature of an autograph.
Pertaining to, or used in, the process of autography; as, autographic ink, paper, or press.
Wiktionary
autographical
a. 1 Relating to an autograph, or one's own handwriting. 2 Relating to, or used in, the process of autography.