Heyden, T. (1848). Discourse on the life and virtues of the Rev. Demetrius Augustine Gallitzin, late pastor of St. Michael's Church, Loretto: Delivered on the occasion of the removal of his remains to the new and splendid monument erected to his memory by a grateful flock. [Pittsburgh, Pa.]: Printed for the Monumental Committee of Loretto, Pa..

Heyden, Thomas. Discourse On the Life and Virtues of the Rev. Demetrius Augustine Gallitzin, Late Pastor of St. Michael's Church, Loretto: Delivered On the Occasion of the Removal of His Remains to the New and Splendid Monument Erected to His Memory By a Grateful Flock. [Pittsburgh, Pa.]: Printed for the Monumental Committee of Loretto, Pa., 1848.

Heyden, Thomas. Discourse On the Life and Virtues of the Rev. Demetrius Augustine Gallitzin, Late Pastor of St. Michael's Church, Loretto: Delivered On the Occasion of the Removal of His Remains to the New and Splendid Monument Erected to His Memory By a Grateful Flock. [Pittsburgh, Pa.]: Printed for the Monumental Committee of Loretto, Pa., 1848.