… collection. The documents are organized by author, date, subject, and document type. Adams, Henry, Testimony of … Congregationalists, the Free Church, and Slavery Belfast News Letter, December 26, 1845 and Belfast Northern Whig, … 12 vols. New York: G.P. Putnam’s Sons, 1905. 156. Johnson, John H., Testimony of John H. Johnson regarding the …