Crook, W., & Griffin, S. (1877). The memory of our fathers: A sermon preached in the Methodist Church, Drogheda, on Sunday evening, 3rd June, 1877 : on the occasion of the death of the Rev. John Nelson, (senior minister of the Irish Methodist Conference) : with a sketch of his life and character. Published for the author at the Wesleyan Conference Office.

Crook, William, and Stephen Griffin. The Memory of Our Fathers: A Sermon Preached in the Methodist Church, Drogheda, on Sunday Evening, 3rd June, 1877 : On the Occasion of the Death of the Rev. John Nelson, (senior Minister of the Irish Methodist Conference) : With a Sketch of His Life and Character. Published for the author at the Wesleyan Conference Office, 1877.