National Union, the Test of American Loyalty. An Historical Discourse, November 24th, 1864, by George Duffield, Jr.George Duffield1864EN
The True Scholar. An Oration Before the Literary Societies of the University of Michigan, June 19, 1845. By George Duffield ... Printed by Request Of, and For, the Societies.George Duffield1845EN
The God of our fathers. An historical sermon preached in the Coates' Street Presbyterian Church, Philadelphia, on Fast Day, January 4, 1861. By George Duffield.George Duffield1861EN
The Principles of Presbyterian Discipline, Unfolded and Illustrated in the Protests and Appeals of the Rev. George Duffield, Entered During the Process of the Presbytery of Carlisle, Against Him at Their Sessions, in April, 1833, in Which His Strict Adherence to the Confession of Faith, and the Standards of the Church Is Fully Shewn.Carlisle (Pa.). First Presbyterian Church.1835EN