Statistics for occurrence #1 of “Ephesus” in book 8, chapter 17 of Polybius, Histories:
...lay, taking with him a letter in cipher and other
credentials addressed to Nicomachus at Rhodes, who was
believed to entertain a fatherly affection and devotion for
Achaeus, and also to Melancomas at Ephesus ; for these were
the men formerly employed by Achaeus in his negotiations
with Ptolemy, and in all other foreign affairs.
...