Purcell, J. B., & Vickers, T. (1868). The Roman Catholic Church and free thought: A controversy between Archbishop Purcell ... and Thomas Vickers ... Together with an appendix containing the Encyclical Letter and Syllabus of Pope Pius IX, dated December 8, 1864 .. Published by the First Congregational Church.

Purcell, John Baptist, and Thomas Vickers. The Roman Catholic Church and Free Thought: A Controversy Between Archbishop Purcell ... and Thomas Vickers ... Together with an Appendix Containing the Encyclical Letter and Syllabus of Pope Pius IX, Dated December 8, 1864 .. Cincinnati: Published by the First Congregational Church, 1868.

Purcell, John Baptist, and Thomas Vickers. The Roman Catholic Church and Free Thought: A Controversy Between Archbishop Purcell ... and Thomas Vickers ... Together with an Appendix Containing the Encyclical Letter and Syllabus of Pope Pius IX, Dated December 8, 1864 .. Published by the First Congregational Church, 1868.