The Collaborative International Dictionary of English v.0.48:

itself \it*self"\ ([i^]t*s[e^]lf"), pron.
   The neuter reflexive pronoun of It; as, the thing is good
   in itself; it stands by itself.
   [1913 Webster]

         Borrowing of foreigners, in itself, makes not the
         kingdom rich or poor.                    --Locke.
   [1913 Webster] itsy-bitsy

Moby Thesaurus II by Grady Ward, 1.0:

35 Moby Thesaurus words for "itself":
   I, I myself, alter, alter ego, alterum, better self, ego,
   ethical self, he, her, herself, him, himself, inner man,
   inner self, it, me, my humble self, myself, number one, oneself,
   other self, ourselves, self, she, subconscious self,
   subliminal self, superego, them, themselves, they, you,
   yours truly, yourself, yourselves