1 reel of microfilm.
Bishop of Marquette, Michigan, 1869-1878, and minister to the Indians of upper Michigan.
Personal correspondence, parish correspondence of other priests, writings and translations in Indian languages, Italian, Latin, English, French, and Slovenian; citizenship papers, financial report of Commission for the Catholic Missions among the Colored People and the Indians, 1889, Polyglott Dictionary German French Indian, writings and religious instructions in Indian languages, an index of Mrak letters in the Archives of the University of Notre Dame, and records of the Diocese of Detroit.
Filmed from two boxes of Mrak correspondence present in the Diocese of Marquette collection in the Archives of the University of Notre Dame.