A. H. Smith, A Catalogue of Sculpture in the Department of Greek and Roman Antiquities…
“ A mantle is wrapped round his body, and he wears sandals. On the left are three mortals, clad in Roman military armour, who appear to be approaching as if to consult the Oracle of Apollo, and who, from the difference of stature, are probably a father and two sons. Between them and the god are two female figures, of colossal proportions, who stand to the front, their heads turned towards Apollo. Each wears a diadem, and the figure on the left holds a box containing incense in her left hand. These two figures are thought to be Leto and Artemis, whose worship was associated with that of Apollo. ”
