Boyse, J., Walker, G., & Mackenzie, J. (1689). An apology for the failures charg'd on the Reverend Mr. George Walker's printed account of the late siege of Derry: In a letter to the undertaker of a more accurate narrative of that siege. s.n.].

Boyse, Joseph, et al. An Apology for the Failures Charg'd on the Reverend Mr. George Walker's Printed Account of the Late Siege of Derry: In a Letter to the Undertaker of a More Accurate Narrative of That Siege. s.n.], 1689.