Letter from Ong Von to Dennis J. Duncanson. Ong Von open his letter by offering his congratulation to Duncanson for his book and informs Duncanson that many copies have already been bought in Springfield, Virginia, while his library already has a copy. Ong Von goes on to inform Duncanson that he had seen McAlister's review of Duncanson's book in The New York Times Review, which he found inadequate and sent a letter to the New York Times book review to defend Duncanson.