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David BRAINERD, Horatius Bonar (1858). “The Life of David Brainerd ... chiefly taken from his own diary, and other private writings. By Jonathan Edwards. With preface, by the Rev. Horatius Bonar”, p.21
William Cowper (1851). “The Works of William Cowper: His Life, Letters, and Poems. Now First Completed by the Introduction of Cowper's Private Correspondence”, p.660