The Collaborative International Dictionary of English v.0.48:

Themselves \Them*selves"\, pron.
   The plural of himself, herself, and itself. See Himself,
   Herself, Itself.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "themselves":
   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, they, you, yours truly, yourself,
   yourselves