Ducey, William Michael, 1897-1970

Benedictine Periodicals (OSB), University of Notre Dame Archives (UNDA), Notre Dame, IN.

https://archives.nd.edu/findaids/ead/html/OSB000.HTM

"United States Census, 1930", Entry for William M Ducey, Member, 1930. FamilySearch. Accessed February 5, 2024.

https://www.familysearch.org/ark:/61903/1:1:XM27-5QT

American Catholic Historical Association. “Notes and Comments.” The Catholic Historical Review 23 (April 1937): 97–110

https://doi.org/https://www.jstor.org/stable/25013575

The National Archives at St. Louis; St. Louis, Missouri; World War II Draft Cards (Fourth Registration) for the District of Columbia; Record Group Title: Records of the Selective Service System; Record Group Number: 147; Box or Roll Number: 019. Accessed via Ancestry.com

Ducey, William Michael. “St. Ailred of Rievaulx and the ‘Speculum Caritatis.’” The Catholic Historical Review 17, no. 3 (October 1931): 308–17.

https://doi.org/https://www.jstor.org/stable/25012916

"Michigan Births, 1867-1902", Entry for Wm. M. Ducey and M. H. Ducey, 03 Feb 1896. FamilySearch. Accessed February 5, 2024.

https://www.familysearch.org/ark:/61903/1:1:NQX9-B2Z