O’Gallagher, Marianna. “Care of the Orphan and the Aged by the Irish Community of Quebec City, 1847 and the Years Following.” Canadian Catholic Historical Association, Study Sessions Vol. 43 (1976): 39–56. http://www.cchahistory.ca/journal/CCHA1976/O’Gallagher.pdf.

O’Gallagher, Marianna. Grosse Ile: Gateway to Canada 1832-1937. Quebec: Carraig Books, 1984.

O’Gallagher, Marianna. The Shamrock Trail: Tracing the Irish in Quebec City. Sainte-Foy, QC: Livres Carraig Books, 1998.

O’Gallagher, Marianna. “Sources of Irish Genealogy in the Province of Quebec.” Canadian Genealogist Vol. 1, no. 3 (1979): 155–166.

O’Gallagher, Marianna. “L’héritage irlandais.” Cap-aux-Diamants (Hors Série 2004): 43–44. https://www.erudit.org/en/journals/cd/2004-cd1046306/7623ac.pdf.

O’Gallagher, Marianna. “Grosse Île: un parc national?” Continuité No. 23 (Printemps 1984): 44. https://www.erudit.org/en/journals/continuite/1984-n23-continuite1051665/18764ac.pdf.

O’Gallagher, Marianna. “Children of the Famine: When Hunger Stalked Ireland in 1847, Quebec Families Welcomed Hundreds of Irish Orphans.” The Beaver (Special Edition) Vol. 88, no. 1 (March 2008): 50–56.

O’Gallagher, Marianna. “Revisiting the Celtic Cross of Grosse-Île : It Stood the Test of Time and Memory.” Quebec Heritage News, August 2006. http://qahn.org/files/quebecanglophoneheritagenetwork/documents/qhn/QHN%20July-Aug%202006.pdf.

O’Gallagher, Marianna. “Jeremiah Gallagher : Ingénieur et humaniste.” Cap-aux-Diamants, Automne 1988. http://www.erudit.org/culture/cd1035538/cd1040880/7280ac.pdf.

O’Gallagher, Marianna. “St. Patrick’s, Quebec: The Building of a Church and of a Parish, 1827-1833.” Master’s Thesis, University of Ottawa, 1976. https://ruor.uottawa.ca/bitstream/10393/21555/1/EC55485.PDF.

O’Gallagher, Marianna. Saint Brigid’s, Quebec: The Irish Care For Their People, 1856 to 1981. Quebec: Carraig Books, 1981.

O’Gallagher, Marianna. Saint Patrick’s, Quebec: The Building of a Church and a Parish 1827 to 1832. Quebec: Carraig Books, 1981.

O’Gallagher, Marianna. “Irish Priests in the Diocese of Quebec in the Nineteenth Century.” Canadian Catholic Historical Association, Study Sessions Vol. 50 (1983): 403–413. https://www.erudit.org/en/journals/sessions/1983-v50-n2-sessions1827474/1007213ar.pdf.

O’Gallagher, Marianna. “Le côte irlandais de Québec.” In Québec ville internationale, 1759 à nos jours, edited by Yves Tessier, 97–106. Québec: Société historique de Québec, 1998.

Masson Dompierre, Rose, and Marianna O’Gallagher. Eyewitness: Grosse Isle, 1847. Sainte-Foy, QC: Livres Carraig Books, 1995.

O’Gallagher, Marianna. “The Irish in Quebec.” In The Untold Story: The Irish in Canada. Volume 1, edited by Robert O’Driscoll and Lorna Reynolds, 253–261. Toronto, ON: Celtic Arts of Canada, 1988.