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1798-1870, Heyden Thomas Discourse on the Life and Virtues of the Rev. Demetrius Augustine Gallitzin, Late Pastor of St. Michael's Church, Loretto
 1798-1870, Heyden Thomas Discourse on the Life and Virtues of the Rev. Demetrius Augustine Gallitzin, Late Pastor of St. Michael's Church, Loretto
Heyden, Thomas A Memoir On The Life And Character Of The Rev. Prince Demetrius A. De Gallitzin: Founder Of Loretto And Catholicity, In Cambria County, Pa., Apostle Of The Alleghanies
 Heyden, Thomas A Memoir On The Life And Character Of The Rev. Prince Demetrius A. De Gallitzin: Founder Of Loretto And Catholicity, In Cambria County, Pa., Apostle Of The Alleghanies
Heyden, Thomas