- A History of Georgetown University, Vol. 3: The Rise to Prominence, 1964-1989
- American Jesuit Spirituality: The Maryland Tradition, 1634-1900 (Sources of American Spirituality)
- A History of Georgetown University, Vol. 2: The Quest for Excellence, 1889-1964
- The Bicentennial History of Georgetown University: From Academy to University 1789-1889 (Bicentennial History of Georgetown University)
- John Dooley's Civil War: An Irish American's Journey in the First Virginia Infantry Regiment