Bea,
The last census released in Canada is 1921. You are looking at a list of registered voters (the town is EGMONT, BC) - NOT a census.
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Attached is an obituary for Bert or Burt ANDERSON who died 29 Dec 1972, aged 63 years in the Colonel Belcher Hospital. I'm NOT sure if this is your Bert, because there is no mention of Rose Lena.
Surviving are two sisters, Mrs Helen LANG of Hamilton, Ontario and (Mrs Fred) Mona KENNARD of Guelph, Ontario.
Predeceased by a brother John in 1965 and a daughter Marilynne ANDERSON in 1970.
Mr Anderson served overseas with the Canadian Army from 1940-1945.
Interment in the Field of Honour, Queen's Park.
http://www.calgary.ca/CSPS/Parks/Pages/Cemeteries/Queens-Par...