↑ "Recensement du Canada de 1911," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:QVB8-X7PF : 16 March 2018), Helen Cowan in entry for George Cowan, 1911; citing Census, Regina Sub-Districts 72-91, Saskatchewan, Canada, Library and Archives of Canada, Ottawa, Ontario; FHL microfilm 2,418,580.
↑ "British Columbia Death Registrations," online database with images. Entry for Helen Marie Cowan; Registration Number: 1957-09-012715, Vancouver, 19 November 1957, Age at Death: 78, Birth: 22 March 1879, Shetland Islands, Scotland; Spouse: George Cowan (divorced), Parents: Robert Henry Isbister and Unknown Ridland. Death certificate Royal British Columbia Museum: BC Archives (https://search-collections.royalbcmuseum.bc.ca/Genealogy : accessed 10 March 2023).
"Census of Canada, 1921," online database with images. Entry for Helen Cowen; Province: Alberta, District Name: Calgary West, District Number: 4, Sub-District Name: City of Calgary (Part), Sub-District Number: 20, Family Number: 45, Page Number: 4, Reference: RG31 - Statistics Canada, Item Number: 467730. Scanned image PDF Library and Archives Canada: Censuses (https://www.bac-lac.gc.ca/eng/census/1921/Pages/item.aspx?itemid=467730 : accessed 10 March 2023).
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