A far more elaborate work was the history of Philip's reign (360–336 BC), with digressions on the names and customs of the various races and countries of which he had occasion to speak, which were so numerous that Philip V of Macedon reduced the bulk of the history from 58 to 16 books by cutting out those parts which had no connection with Macedonia. It was from this history that Trogus Pompeius (of whose "Historiae Philippicae" we possess the epitome by Justin) derived much of his material. Fifty-three books were extant in the time of Photius (9th century), who read them, and has left us an epitome of the 12th book. Several fragments, chiefly anecdotes and strictures of various kinds upon the character of nations and individuals, are preserved by Athenaeus, Plutarch and others. Of the "Letter to Alexander" we possess one or two fragments cited by Athenaeus, criticizing severely the immorality and dissipations of Harpalus.