O'Brien, W. (1958). Copy letter from D[esmond] R[yan] to William O'Brien regarding his research involving [Rev. David] Moriarty and his views on the Manchester Martyrs, [Terence] de Vere White and inaccuracies in his writings on modern Irish history and Ryan's uncertainty at the facts in the new edition of 'The Rising'.

O'Brien, William. Copy Letter from D[esmond] R[yan] to William O'Brien Regarding His Research Involving [Rev. David] Moriarty and His Views on the Manchester Martyrs, [Terence] De Vere White and Inaccuracies in His Writings on Modern Irish History and Ryan's Uncertainty at the Facts in the New Edition of 'The Rising'. 1958.