Ludwig Wittgenstein: The Duty of Genius

Wittgenstein on Music (Cambridge Elements in the Philosophy of Ludwig Wittgenstein)

Wittgenstein on Knowledge and Certainty (Elements in the Philosophy of Ludwig Wittgenstein)

Wittgenstein and Russell: the Vicissitudes of Judgment Proposition (Elements in Philosophy Ludwig Wittgenstein)

Ludwig Wittgenstein: Philosophy in the Age of Airplanes (Jewish Lives)