Includes Confessions of Faith booklet (1846), Congregational Iowa booklet (1960), Historical Sketches of The Congregational Christian Churches and The Evangelical Reformed Churches booklet (1955), Salem First Congregational Church Centennial booklet (1952), A Record of Fifty Years book (1905), Copies of The Congregational Christian Historical Society Newsletter (1955-1963), clipping regarding Wyckoff Gifts (1969), Chronological summary of events leading to the formation of the United Church of Christ (1960).