Passage 6.1.6
ἐς δὲ τὴν Ἀρχιδάμου Κυνίσκαν, ἐς τὸ γένος τε αὐτῆς καὶ ἐπὶ ταῖς Ὀλυμπικαῖς νίκαις, πρότερον ἔτι ἐδήλωσα ἐν τοῖς λόγοις οἳ ἐς τοὺς βασιλέας τοὺς Λακεδαιμονίων ἔχουσι· πεποίηται δὲ ἐν Ὀλυμπίᾳ παρὰ τὸν ἀνδριάντα τοῦ Τρωίλου λίθου κρηπὶς καὶ ἅρμα τε ἵππων καὶ ἀνὴρ ἡνίοχος καὶ αὐτῆς Κυνίσκας εἰκών, Ἀπελλοῦ τέχνη, γέγραπται δὲ καὶ ἐπιγράμματα ἐς τὴν Κυνίσκαν ἔχοντα.
Regarding Cynisca, daughter of Archidamus, both her ancestry and her Olympic victories, I have already spoken previously in the account of the Spartan kings. At Olympia, beside the statue of Troilus, there is built a stone platform; upon it stands a chariot drawn by horses, with a male charioteer, and an image of Cynisca herself made by Apellas. There are also inscriptions written in honor of Cynisca.