"Recensement du Canada de 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVBC-PBMF : 16 March 2018), Mary Kelly in entry for John Kelly, 1911; citing Census, Québec West Sub-Districts 1-10, Quebec, Canada, Library and Archives of Canada, Ottawa, Ontario; FHL microfilm 2,418,566.
1921 Census of Canada; Reference Number: RG 31; Folder Number: 133; Census Place: 133, Québec South (City), Quebec; Page Number: 23.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X7SK-GM1 : accessed 29 March 2021), Mamie Duncan in household of Spurgeon Duncan, Detroit (Districts 0751-0879), Wayne, Michigan, United States; citing enumeration district (ED) ED 812, sheet 29A, line 42, family 11, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1064; FHL microfilm 2,340,799.
"United States Census, 1930," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:X7SK-GM1 : accessed 29 March 2021), Mamie Duncan in household of Spurgeon Duncan, Detroit (Districts 0751-0879), Wayne, Michigan, United States; citing enumeration district (ED) ED 812, sheet 29A, line 42, family 11, NARA microfilm publication T626 (Washington D.C.: National Archives and Records Administration, 2002), roll 1064; FHL microfilm 2,340,799.
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