Athenaeus, Deipnosophists v 197C-202A. See Ellen Elizabeth Rice The Grand Procession of Ptolemy Philadelphius (Oxford: Oxford Univ. Press, 1983). This procession probably took place in the first half of the third century B.C.E. Victoria Foertmeyer (“The dating of the Pompe of Ptolemy II Philadelphus,” in Historia 37 [1988], pp. 90–104) dates it to 275–4 B.C.E., while Richard A. Hazzard (Imagination of a Monarchy: Studies in Ptolemaic Propaganda [Toronto: Univ. of Toronto Press, 2000], pp. 59–79) believes that this procession took place in 262 B.C.E.