Oakey, P. D. (1861). The war, its origin, purpose, and our duty respecting it: A sermon preached in the First Presbyterian Church, Jamaica, L.I., on the day of prayer, July First, 1861 / by P.D. Oakey. New York: J.A. Gray.

Oakey, P D. The War, Its Origin, Purpose, and Our Duty Respecting It: A Sermon Preached in the First Presbyterian Church, Jamaica, L.I., On the Day of Prayer, July First, 1861 / By P.D. Oakey. New York: J.A. Gray, 1861.

Oakey, P D. The War, Its Origin, Purpose, and Our Duty Respecting It: A Sermon Preached in the First Presbyterian Church, Jamaica, L.I., On the Day of Prayer, July First, 1861 / By P.D. Oakey. New York: J.A. Gray, 1861.